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131 lines
3.8 KiB
131 lines
3.8 KiB
/**
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*
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*/
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var BubbleSort = function() {
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//===== Action management.
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//
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this.preSort = function(arr) {
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this
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.instruct(Itemgroup.background, 1, 0, 0, arr.length, Visualizer.bg0)
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.instruct(Itemgroup.message, 0, 0, 1, `Comparisons: ${this.comparisons}`)
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.instruct(Itemgroup.message, 0, 0, 2, `Swaps: ${this.swaps}`)
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.instruct(Itemgroup.message, 0, 0, 3, ``)
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.instruct(Itemgroup.message, 0, 0, 4, ``)
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.instruct(Itemgroup.message, 0, 100, 5, `Starting sort.`)
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};
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//
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this.midSort = function(arr, i) {
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this
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.instruct(Itemgroup.background, 1, 0, 0, arr.length, Visualizer.bg0)
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.instruct(Itemgroup.background, 1, 0, i, i, Visualizer.bg1)
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.instruct(Itemgroup.background, 1, 0, (i - 1), (i - 1), Visualizer.bg1)
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.instruct(Itemgroup.message, 0, 0, 1, `Comparisons: ${this.comparisons}`)
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.instruct(Itemgroup.message, 0, 0, 3, `Comparing ${arr[i - 1]} and ${arr[i]}.`)
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.instruct(Itemgroup.message, 0, 0, 4, ``)
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.instruct(Itemgroup.message, 0, 100, 5, ``)
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};
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//
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this.swap = function(arr, i) {
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this
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.instruct(Itemgroup.background, 1, 0, 0, arr.length, Visualizer.bg0)
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.instruct(Itemgroup.background, 1, 0, i, i, Visualizer.bg1)
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.instruct(Itemgroup.background, 1, 0, (i - 1), (i - 1), Visualizer.bg1)
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.instruct(Itemgroup.message, 0, 0, 2, `Swaps: ${this.swaps}`)
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.instruct(Itemgroup.message, 0, 0, 4, `${arr[i]} > ${arr[i - 1]}`)
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.instruct(Itemgroup.message, 0, 0, 5, `Swap current and previous.`)
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.instruct(Itemgroup.swap, 1, 300, i, i - 1)
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};
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//
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this.foundSwapped = function(arr) {
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this
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.instruct(Itemgroup.background, 1, 0, 0, arr.length, Visualizer.bg0)
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.instruct(Itemgroup.message, 0, 0, 3, ``)
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.instruct(Itemgroup.message, 0, 0, 4, `Swapped elements found.`)
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.instruct(Itemgroup.message, 0, 100, 5, `Recursing.`)
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};
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//
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this.postSort = function(arr) {
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this
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.instruct(Itemgroup.background, 1, 0, 0, arr.length, Visualizer.bg0)
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.instruct(Itemgroup.message, 0, 0, 1, `Comparisons: ${this.comparisons}`)
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.instruct(Itemgroup.message, 0, 0, 2, `Swaps: ${this.swaps}`)
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.instruct(Itemgroup.message, 0, 0, 3, ``)
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.instruct(Itemgroup.message, 0, 0, 4, ``)
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.instruct(Itemgroup.message, 0, 100, 5, `Sorting complete.`)
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};
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};
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BubbleSort.prototype = Object.create(Sorter.prototype);
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/**
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*
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*/
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BubbleSort.prototype.init = function() {
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var len = this.shuffled.length;
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this.actions = [];
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this.swaps = 0;
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this.comparisons = 0;
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this
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.instruct(Itemgroup.items, 0, 0, len)
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.instruct(Itemgroup.items, 1, 0, len)
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.instruct(Itemgroup.items, 2, 0, len)
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for (var i = 0; i < len; i++) {
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this.instruct(Itemgroup.text, 1, 0, i, this.shuffled[i]);
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}
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this
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.instruct(Itemgroup.foreground, 1, 0, 0, len, Visualizer.fg0)
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.instruct(Itemgroup.background, 1, 0, 0, len, Visualizer.bg0)
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.instruct(Itemgroup.opacity, 0, 0, 0, len, 0)
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.instruct(Itemgroup.opacity, 2, 0, 0, len, 0)
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};
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/**
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*
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*/
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BubbleSort.prototype.sort = function(arr) {
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var i, tmp;
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var swapped = false;
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var len = arr.length;
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this.preSort(arr);
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for (i = 1; i < len; i++) {
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this.comparisons++;
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this.midSort(arr, i);
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if (arr[i - 1] > arr[i]) {
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this.swaps++;
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tmp = arr[i];
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arr[i] = arr[i - 1];
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arr[i - 1] = tmp;
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swapped = true;
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this.swap(arr, i, i - 1);
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}
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}
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if (swapped === true) {
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this.foundSwapped(arr);
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this.sort(arr);
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}
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this.postSort(arr);
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return arr;
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};
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