644 行
18 KiB
JavaScript
644 行
18 KiB
JavaScript
// Copyright 2011 David Galles, University of San Francisco. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of the University of San Francisco
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var LINK_COLOR = "#007700";
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var HIGHLIGHT_CIRCLE_COLOR = "#007700";
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var MERGE_SEPARATING_LINE_COLOR = "#0000FF";
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var FOREGROUND_COLOR = "#007700";
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var BACKGROUND_COLOR = "#EEFFEE";
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var DEGREE_OFFSET_X = -20;
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var DEGREE_OFFSET_Y = -20;
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var DELETE_LAB_X = 30;
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var DELETE_LAB_Y = 50;
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var NODE_WIDTH = 60;
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var NODE_HEIGHT = 70
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var STARTING_X = 70;
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var STARTING_Y = 80;
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var INSERT_X = 30;
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var INSERT_Y = 25
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function BinomialQueue(am, w, h)
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{
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this.init(am, w, h);
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}
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BinomialQueue.prototype = new Algorithm();
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BinomialQueue.prototype.constructor = BinomialQueue;
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BinomialQueue.superclass = Algorithm.prototype;
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BinomialQueue.prototype.init = function(am, w, h)
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{
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BinomialQueue.superclass.init.call(this, am, w, h);
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this.addControls();
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this.treeRoot = null;
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this.currentLayer = 1;
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this.animationManager.setAllLayers([0,this.currentLayer]);
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this.nextIndex = 0;
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}
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BinomialQueue.prototype.addControls = function()
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{
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this.controls = [];
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this.insertField = addControlToAlgorithmBar("Text", "");
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this.insertField.onkeydown = this.returnSubmit(this.insertField, this.insertCallback.bind(this), 4);
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this.controls.push(this.insertField);
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this.insertButton = addControlToAlgorithmBar("Button", "添加");
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this.insertButton.onclick = this.insertCallback.bind(this);
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this.controls.push(this.insertButton);
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this.removeSmallestButton = addControlToAlgorithmBar("Button", "Remove Smallest");
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this.removeSmallestButton.onclick = this.removeSmallestCallback.bind(this);
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this.controls.push(this.removeSmallestButton);
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this.clearHeapButton = addControlToAlgorithmBar("Button", "Clear Heap");
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this.clearHeapButton.onclick = this.clearCallback.bind(this);
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this.controls.push(this.clearHeapButton);
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var radioButtonList = addRadioButtonGroupToAlgorithmBar(["Logical Representation",
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"Internal Representation",
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],
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"BQueueRep");
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radioButtonList[0].onclick = this.representationChangedHandler.bind(this, true);
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radioButtonList[1].onclick = this.representationChangedHandler.bind(this, false);
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radioButtonList[0].checked = true;
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}
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BinomialQueue.prototype.representationChangedHandler = function(logicalRep, event)
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{
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if (logicalRep)
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{
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this.animationManager.setAllLayers([0,1]);
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this.currentLayer = 1;
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}
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else
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{
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this.animationManager.setAllLayers([0,2]);
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this.currentLayer = 2;
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}
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}
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BinomialQueue.prototype.setPositions = function(tree, xPosition, yPosition)
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{
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if (tree != null)
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{
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if (tree.degree == 0)
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{
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tree.x = xPosition;
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tree.y = yPosition;
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return this.setPositions(tree.rightSib, xPosition + NODE_WIDTH, yPosition);
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}
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else if (tree.degree == 1)
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{
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tree.x = xPosition;
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tree.y = yPosition;
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this.setPositions(tree.leftChild, xPosition, yPosition + NODE_HEIGHT);
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return this.setPositions(tree.rightSib, xPosition + NODE_WIDTH, yPosition);
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}
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else
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{
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var treeWidth = Math.pow(2, tree.degree - 1);
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tree.x = xPosition + (treeWidth - 1) * NODE_WIDTH;
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tree.y = yPosition;
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this.setPositions(tree.leftChild, xPosition, yPosition + NODE_HEIGHT);
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return this.setPositions(tree.rightSib, xPosition + treeWidth * NODE_WIDTH, yPosition);
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}
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}
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return xPosition;
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}
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BinomialQueue.prototype.moveTree = function(tree)
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{
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if (tree != null)
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{
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this.cmd("Move", tree.graphicID, tree.x, tree.y);
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this.cmd("Move", tree.internalGraphicID, tree.x, tree.y);
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this.cmd("Move", tree.degreeID, tree.x + DEGREE_OFFSET_X, tree.y + DEGREE_OFFSET_Y);
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this.moveTree(tree.leftChild);
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this.moveTree(tree.rightSib);
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}
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}
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BinomialQueue.prototype.insertCallback = function(event)
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{
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var insertedValue;
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insertedValue = this.normalizeNumber(this.insertField.value, 4);
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if (insertedValue != "")
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{
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this.insertField.value = "";
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this.implementAction(this.insertElement.bind(this),insertedValue);
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}
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}
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BinomialQueue.prototype.clearCallback = function(event)
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{
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this.clear();
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}
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BinomialQueue.prototype.clear = function()
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{
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this.commands = new Array();
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this.animationManager.StartNewAnimation(this.commands);
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this.animationManager.skipForward();
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this.animationManager.clearHistory();
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this.actionHistory = new Array();
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}
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BinomialQueue.prototype.reset = function()
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{
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this.treeRoot = null;
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this.nextIndex = 0;
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}
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BinomialQueue.prototype.removeSmallestCallback = function(event)
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{
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this.implementAction(this.removeSmallest.bind(this),"");
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}
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BinomialQueue.prototype.removeSmallest = function(dummy)
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{
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this.commands = new Array();
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if (this.treeRoot != null)
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{
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var tmp;
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var prev;
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var smallest = this.treeRoot;
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this.cmd("SetHighlight", smallest.graphicID, 1);
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this.cmd("SetHighlight", smallest.internalGraphicID, 1);
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for (tmp = this.treeRoot.rightSib; tmp != null; tmp = tmp.rightSib)
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{
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this.cmd("SetHighlight", tmp.graphicID, 1);
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this.cmd("SetHighlight", tmp.internalGraphicID, 1);
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this.cmd("Step");
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if (tmp.data < smallest.data)
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{
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this.cmd("SetHighlight", smallest.graphicID, 0);
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this.cmd("SetHighlight", smallest.internalGraphicID, 0);
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smallest = tmp;
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}
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else
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{
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this.cmd("SetHighlight", tmp.graphicID, 0);
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this.cmd("SetHighlight", tmp.internalGraphicID, 0);
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}
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}
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if (smallest == this.treeRoot) {
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this.treeRoot = this.treeRoot.rightSib;
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prev = null;
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}
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else
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{
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for (prev = this.treeRoot; prev.rightSib != smallest; prev = prev.rightSib) ;
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prev.rightSib = prev.rightSib.rightSib;
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}
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var moveLabel = this.nextIndex++;
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this.cmd("SetText", smallest.graphicID, "");
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this.cmd("SetText", smallest.internalGraphicID, "");
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this.cmd("CreateLabel", moveLabel, smallest.data, smallest.x, smallest.y);
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this.cmd("Move", moveLabel, DELETE_LAB_X, DELETE_LAB_Y);
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this.cmd("Step");
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if (prev != null && prev.rightSib != null)
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{
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this.cmd("Connect", prev.internalGraphicID,
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prev.rightSib.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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this.cmd("Delete", smallest.graphicID);
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this.cmd("Delete", smallest.internalGraphicID);
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this.cmd("Delete", smallest.degreeID);
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this.secondaryTreeRoot = this.reverse(smallest.leftChild);
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for (tmp = this.secondaryTreeRoot; tmp != null; tmp = tmp.rightSib)
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tmp.parent = null;
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this.merge();
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this.cmd("Delete", moveLabel);
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}
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return this.commands;
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}
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BinomialQueue.prototype.reverse = function(tree)
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{
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var newTree = null;
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var tmp;
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while (tree != null)
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{
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if (tree.rightSib != null)
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{
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this.cmd("Disconnect", tree.internalGraphicID, tree.rightSib.internalGraphicID);
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this.cmd("Connect", tree.rightSib.internalGraphicID,
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tree.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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tmp = tree;
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tree = tree.rightSib;
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tmp.rightSib = newTree;
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tmp.parent=null;
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newTree = tmp;
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}
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return newTree;
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}
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BinomialQueue.prototype.insertElement = function(insertedValue)
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{
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this.commands = new Array();
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var insertNode = new BinomialNode(insertedValue, this.nextIndex++, INSERT_X, INSERT_Y);
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insertNode.internalGraphicID = this.nextIndex++;
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insertNode.degreeID= this.nextIndex++;
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this.cmd("CreateCircle", insertNode.graphicID, insertedValue, INSERT_X, INSERT_Y);
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this.cmd("SetForegroundColor", insertNode.graphicID, FOREGROUND_COLOR);
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this.cmd("SetBackgroundColor", insertNode.graphicID, BACKGROUND_COLOR);
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this.cmd("SetLayer", insertNode.graphicID, 1);
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this.cmd("CreateCircle", insertNode.internalGraphicID, insertedValue, INSERT_X, INSERT_Y);
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this.cmd("SetForegroundColor", insertNode.internalGraphicID, FOREGROUND_COLOR);
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this.cmd("SetBackgroundColor", insertNode.internalGraphicID, BACKGROUND_COLOR);
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this.cmd("SetLayer", insertNode.internalGraphicID, 2);
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this.cmd("CreateLabel", insertNode.degreeID, insertNode.degree, insertNode.x + DEGREE_OFFSET_X, insertNode.y + DEGREE_OFFSET_Y);
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this.cmd("SetTextColor", insertNode.degreeID, "#0000FF");
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this.cmd("SetLayer", insertNode.degreeID, 2);
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this.cmd("Step");
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if (this.treeRoot == null)
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{
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this.treeRoot = insertNode;
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this.setPositions(this.treeRoot, STARTING_X, STARTING_Y);
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this.moveTree(this.treeRoot);
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}
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else
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{
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this.secondaryTreeRoot = insertNode;
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this.merge();
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}
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return this.commands;
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}
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BinomialQueue.prototype.merge = function()
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{
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if (this.treeRoot != null)
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{
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var leftSize = this.setPositions(this.treeRoot, STARTING_X, STARTING_Y);
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this.setPositions(this.secondaryTreeRoot, leftSize + NODE_WIDTH, STARTING_Y);
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this.moveTree(this.secondaryTreeRoot);
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this.moveTree(this.treeRoot);
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var lineID = this.nextIndex++;
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this.cmd("CreateRectangle", lineID, "", 0, 200, leftSize, 50,"left","top");
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this.cmd("SetForegroundColor", lineID, MERGE_SEPARATING_LINE_COLOR);
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this.cmd("SetLayer", lineID, 0);
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this.cmd("Step");
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}
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else
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{
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this.treeRoot = this.secondaryTreeRoot;
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this.secondaryTreeRoot = null;
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this.setPositions(this.treeRoot, NODE_WIDTH, STARTING_Y);
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this.moveTree(this.treeRoot);
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return;
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}
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while (this.secondaryTreeRoot != null)
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{
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var tmp = this.secondaryTreeRoot;
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this.secondaryTreeRoot = this.secondaryTreeRoot.rightSib;
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if (this.secondaryTreeRoot != null)
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{
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this.cmd("Disconnect", tmp.internalGraphicID, this.secondaryTreeRoot.internalGraphicID);
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}
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if (tmp.degree <= this.treeRoot.degree)
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{
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tmp.rightSib = this.treeRoot;
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this.treeRoot = tmp;
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this.cmd("Connect", this.treeRoot.internalGraphicID,
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this.treeRoot.rightSib.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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else
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{
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var tmp2 = this.treeRoot;
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while (tmp2.rightSib != null && tmp2.rightSib.degree < tmp.degree)
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{
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tmp2 = tmp2. rightSib;
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}
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if (tmp2.rightSib != null)
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{
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this.cmd("Disconnect", tmp2.internalGraphicID, tmp2.rightSib.internalGraphicID);
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this.cmd("Connect", tmp.internalGraphicID,
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tmp2.rightSib.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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tmp.rightSib= tmp2.rightSib;
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tmp2.rightSib = tmp;
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this.cmd("Connect", tmp2.internalGraphicID,
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tmp.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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leftSize = this.setPositions(this.treeRoot, STARTING_X, STARTING_Y);
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this.setPositions(this.secondaryTreeRoot, leftSize + NODE_WIDTH, STARTING_Y);
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this.moveTree(this.secondaryTreeRoot);
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this.moveTree(this.treeRoot);
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this.cmd("Move", lineID, leftSize, 50);
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this.cmd("Step");
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}
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this.cmd("Delete", lineID);
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this.combineNodes();
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}
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BinomialQueue.prototype.combineNodes = function()
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{
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var tmp;
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var tmp2;
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while ((this.treeRoot != null && this.treeRoot.rightSib != null && this.treeRoot.degree == this.treeRoot.rightSib.degree) &&
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(this.treeRoot.rightSib.rightSib == null || this.treeRoot.rightSib.degree != this.treeRoot.rightSib.rightSib.degree))
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{
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this.cmd("Disconnect", this.treeRoot.internalGraphicID, this.treeRoot.rightSib.internalGraphicID);
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if (this.treeRoot.rightSib.rightSib != null)
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{
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this.cmd("Disconnect", this.treeRoot.rightSib.internalGraphicID, this.treeRoot.rightSib.rightSib.internalGraphicID);
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}
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if (this.treeRoot.data < this.treeRoot.rightSib.data)
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{
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tmp = this.treeRoot.rightSib;
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this.treeRoot.rightSib = tmp.rightSib;
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tmp.rightSib = this.treeRoot.leftChild;
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this.treeRoot.leftChild = tmp;
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tmp.parent = this.treeRoot;
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}
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else
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{
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tmp = this.treeRoot;
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this.treeRoot = this.treeRoot.rightSib;
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tmp.rightSib = this.treeRoot.leftChild;
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this.treeRoot.leftChild = tmp;
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tmp.parent = this.treeRoot;
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}
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this.cmd("Connect", this.treeRoot.graphicID,
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this.treeRoot.leftChild.graphicID,
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FOREGROUND_COLOR,
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0, // Curve
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0, // Directed
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""); // Label
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this.cmd("Connect", this.treeRoot.internalGraphicID,
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this.treeRoot.leftChild.internalGraphicID,
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FOREGROUND_COLOR,
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0.15, // Curve
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1, // Directed
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""); // Label
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this.cmd("Connect", this.treeRoot.leftChild.internalGraphicID,
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this.treeRoot.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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if (this.treeRoot.leftChild.rightSib != null)
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{
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this.cmd("Disconnect", this.treeRoot.internalGraphicID, this.treeRoot.leftChild.rightSib.internalGraphicID);
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this.cmd("Connect", this.treeRoot.leftChild.internalGraphicID,
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this.treeRoot.leftChild.rightSib.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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if (this.treeRoot.rightSib != null)
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{
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this.cmd("Connect", this.treeRoot.internalGraphicID,
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this.treeRoot.rightSib.internalGraphicID,
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FOREGROUND_COLOR,
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0, // Curve
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1, // Directed
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""); // Label
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}
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this.treeRoot.degree++;
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this.cmd("SetText", this.treeRoot.degreeID, this.treeRoot.degree);
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this.setPositions(this.treeRoot, STARTING_X, STARTING_Y);
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this.moveTree(this.treeRoot);
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this.cmd("Step");
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}
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tmp2 = this.treeRoot;
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while (tmp2 != null && tmp2.rightSib != null && tmp2.rightSib.rightSib != null)
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{
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if (tmp2.rightSib.degree != tmp2.rightSib.rightSib.degree)
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{
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tmp2 = tmp2.rightSib;
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} else if ((tmp2.rightSib.rightSib.rightSib != null) &&
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(tmp2.rightSib.rightSib.degree == tmp2.rightSib.rightSib.rightSib.degree))
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{
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tmp2 = tmp2.rightSib;
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}
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else
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{
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this.cmd("Disconnect", tmp2.rightSib.internalGraphicID, tmp2.rightSib.rightSib.internalGraphicID);
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this.cmd("Disconnect", tmp2.internalGraphicID, tmp2.rightSib.internalGraphicID);
|
|
if (tmp2.rightSib.rightSib.rightSib != null)
|
|
{
|
|
this.cmd("Disconnect", tmp2.rightSib.rightSib.internalGraphicID, tmp2.rightSib.rightSib.rightSib.internalGraphicID);
|
|
}
|
|
|
|
var tempRoot;
|
|
if (tmp2.rightSib.data < tmp2.rightSib.rightSib.data)
|
|
{
|
|
tmp = tmp2.rightSib.rightSib;
|
|
tmp2.rightSib.rightSib = tmp.rightSib;
|
|
|
|
tmp.rightSib = tmp2.rightSib.leftChild;
|
|
tmp2.rightSib.leftChild = tmp;
|
|
tmp.parent = tmp2.rightSib;
|
|
tmp2.rightSib.degree++;
|
|
this.cmd("SetText", tmp2.rightSib.degreeID, tmp2.rightSib.degree);
|
|
tempRoot = tmp2.rightSib;
|
|
|
|
}
|
|
else
|
|
{
|
|
tmp = tmp2.rightSib;
|
|
tmp2.rightSib = tmp2.rightSib.rightSib;
|
|
tmp.rightSib = tmp2.rightSib.leftChild;
|
|
tmp2.rightSib.leftChild = tmp;
|
|
tmp.parent = tmp2.rightSib;
|
|
tmp2.rightSib.degree++;
|
|
this.cmd("SetText", tmp2.rightSib.degreeID, tmp2.rightSib.degree);
|
|
tempRoot = tmp2.rightSib;
|
|
}
|
|
this.cmd("Connect", tempRoot.graphicID,
|
|
tempRoot.leftChild.graphicID,
|
|
FOREGROUND_COLOR,
|
|
0, // Curve
|
|
0, // Directed
|
|
""); // Label
|
|
|
|
this.cmd("Connect", tempRoot.internalGraphicID,
|
|
tempRoot.leftChild.internalGraphicID,
|
|
FOREGROUND_COLOR,
|
|
0.15, // Curve
|
|
1, // Directed
|
|
""); // Label
|
|
|
|
this.cmd("Connect", tempRoot.leftChild.internalGraphicID,
|
|
tempRoot.internalGraphicID,
|
|
FOREGROUND_COLOR,
|
|
0, // Curve
|
|
1, // Directed
|
|
""); // Label
|
|
|
|
this.cmd("Connect", tmp2.internalGraphicID,
|
|
tempRoot.internalGraphicID,
|
|
FOREGROUND_COLOR,
|
|
0, // Curve
|
|
1, // Directed
|
|
""); // Label
|
|
|
|
if (tempRoot.leftChild.rightSib != null)
|
|
{
|
|
this.cmd("Disconnect",tempRoot.internalGraphicID, tempRoot.leftChild.rightSib.internalGraphicID);
|
|
this.cmd("Connect",tempRoot.leftChild.internalGraphicID,
|
|
tempRoot.leftChild.rightSib.internalGraphicID,
|
|
FOREGROUND_COLOR,
|
|
0, // Curve
|
|
1, // Directed
|
|
""); // Label);
|
|
}
|
|
if (tempRoot.rightSib != null)
|
|
{
|
|
this.cmd("Connect",tempRoot.internalGraphicID,
|
|
tempRoot.rightSib.internalGraphicID,
|
|
FOREGROUND_COLOR,
|
|
0, // Curve
|
|
1, // Directed
|
|
""); // Label);
|
|
}
|
|
|
|
|
|
|
|
|
|
this.setPositions(this.treeRoot, STARTING_X, STARTING_Y);
|
|
this.moveTree(this.treeRoot);
|
|
this.cmd("Step");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
BinomialQueue.prototype.enableUI = function(event)
|
|
{
|
|
for (var i = 0; i < this.controls.length; i++)
|
|
{
|
|
this.controls[i].disabled = false;
|
|
}
|
|
|
|
|
|
}
|
|
BinomialQueue.prototype.disableUI = function(event)
|
|
{
|
|
for (var i = 0; i < this.controls.length; i++)
|
|
{
|
|
this.controls[i].disabled = true;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
var currentAlg;
|
|
|
|
function init()
|
|
{
|
|
var animManag = initCanvas();
|
|
currentAlg = new BinomialQueue(animManag, canvas.width, canvas.height);
|
|
}
|
|
|
|
|
|
|
|
|
|
function BinomialNode(val, id, initialX, initialY)
|
|
{
|
|
this.data = val;
|
|
this.x = initialX;
|
|
this.y = initialY;
|
|
this.graphicID = id;
|
|
this.degree = 0;
|
|
this.leftChild = null;
|
|
this.rightSib = null;
|
|
this.parent = null;
|
|
this.internalGraphicID = -1;
|
|
this.degreeID = -1;
|
|
}
|
|
|
|
|