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101 lines
2.8 KiB
HTML
101 lines
2.8 KiB
HTML
<!DOCTYPE html>
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<head>
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<!--
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Copyright (C) 2007 Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<title>SunSpider access-binary-trees</title>
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</head>
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<body>
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<h3>access-binary-trees</h3>
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<div id="console">
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</div>
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<script>
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var _sunSpiderStartDate = new Date();
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/* The Great Computer Language Shootout
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http://shootout.alioth.debian.org/
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contributed by Isaac Gouy */
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function TreeNode(left,right,item){
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this.left = left;
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this.right = right;
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this.item = item;
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}
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TreeNode.prototype.itemCheck = function(){
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if (this.left==null) return this.item;
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else return this.item + this.left.itemCheck() - this.right.itemCheck();
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}
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function bottomUpTree(item,depth){
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if (depth>0){
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return new TreeNode(
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bottomUpTree(2*item-1, depth-1)
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,bottomUpTree(2*item, depth-1)
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,item
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);
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}
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else {
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return new TreeNode(null,null,item);
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}
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}
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var ret;
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for ( var n = 4; n <= 7; n += 1 ) {
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var minDepth = 4;
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var maxDepth = Math.max(minDepth + 2, n);
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var stretchDepth = maxDepth + 1;
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var check = bottomUpTree(0,stretchDepth).itemCheck();
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var longLivedTree = bottomUpTree(0,maxDepth);
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for (var depth=minDepth; depth<=maxDepth; depth+=2){
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var iterations = 1 << (maxDepth - depth + minDepth);
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check = 0;
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for (var i=1; i<=iterations; i++){
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check += bottomUpTree(i,depth).itemCheck();
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check += bottomUpTree(-i,depth).itemCheck();
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}
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}
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ret = longLivedTree.itemCheck();
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}
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var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
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document.getElementById("console").innerHTML = _sunSpiderInterval;
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</script>
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</body>
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</html>
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