JavaScript树的深度优先遍历和广度优先遍历算法示例
筱葭 人气:1本文实例讲述了JavaScript树的深度优先遍历和广度优先遍历算法。分享给大家供大家参考,具体如下:
1、深度优先遍历的递归写法
function deepTraversal(node) { var nodes = []; if (node != null) { nodes.push(node); var children = node.children; for (var i = 0; i < children.length; i++) deepTraversal(children[i]); } return nodes; }
2、深度优先遍历的非递归写法
function deepTraversal(node) { var nodes = []; if (node != null) { var stack = []; stack.push(node); while (stack.length != 0) { var item = stack.pop(); nodes.push(item); var children = item.children; for (var i = children.length - 1; i >= 0; i--) stack.push(children[i]); } } return nodes; }
3、广度优先遍历的递归写法:
报错:Maximum call stack size exceeded(…)
function wideTraversal(node) { var nodes = []; var i = 0; if (!(node == null)) { nodes.push(node); wideTraversal(node.nextElementSibling); node = nodes[i++]; wideTraversal(node.firstElementChild); } return nodes; }
4、广度优先遍历的非递归写法
function wideTraversal(selectNode) { var nodes = []; if (selectNode != null) { var queue = []; queue.unshift(selectNode); while (queue.length != 0) { var item = queue.shift(); nodes.push(item); var children = item.children; for (var i = 0; i < children.length; i++) queue.push(children[i]); } } return nodes; }
希望本文所述对大家JavaScript程序设计有所帮助。
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