标签:style io color ar java sp for on amp
/** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */ public class Solution { public int minDepth(TreeNode root) { if(root==null){ return 0; } if(root.left==null && root.right==null){ return 1; } if(root.left!=null&&root.right!=null){ return 1+<span style="color:#ff6666;">Math.min(minDepth(root.left), minDepth(root.right));</span> }else if(root.left!=null){ return 1+minDepth(root.left); }else{ return 1+minDepth(root.right); } } }
在解题过程中,碰到了Time Limit Exceeded的错误,发现是由
minDepth(root.left)>minDepth(root.right)?<span style="font-family: Arial, Helvetica, sans-serif;">minDepth(root.right):minDepth(root.left)引起的,</span>
<span style="font-family: Arial, Helvetica, sans-serif;">换成上面标红:</span><pre name="code" class="java"><span style="color:#ff6666;">Math.min(minDepth(root.left), minDepth(root.right))</span>
没有错误。
LeetCode Minimum Depth of Binary Tree
标签:style io color ar java sp for on amp
原文地址:http://blog.csdn.net/foreverbu/article/details/41042105