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104.Maximum Depth of Binary Tree
Given a binary tree, findits maximum depth. The maximum depth is thenumber of nodes along the longest path from the root node down to the farthestleaf node.   可用递归,效率低。 这里用类似层次遍历的算法。设置一个队列和两个int变量...
分类:其他好文   时间:2015-01-30 09:10:56    阅读次数:261
LeetCode --- 14. Longest Common Prefix
题目链接:Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 这道题的要求是在字符串数组中找到最长公共前缀。 思路比较简单,就是两个字符串逐个比较,找最长公共子串。这里采用将每个字符串都与第一个字符串相比较,求最长子串。 时间...
分类:其他好文   时间:2015-01-29 21:13:30    阅读次数:197
Leetcode#3 Longest Substring Without Repeating Characters
原题地址双指针法。右指针不断向右试探,当遇到重复字符时停下来,此时左指针开始向右收缩,直到去掉那个重复字符。代码: 1 int lengthOfLongestSubstring(string s) { 2 map record; 3 int maxLen = 0; 4...
分类:其他好文   时间:2015-01-29 19:20:25    阅读次数:140
leetcode 159: Longest Substring with At Most Two Distinct Characters
Total Accepted: 1167 Total Submissions: 3961 Given a string, find the length of the longest substring T that contains at most 2 distinct characters. For example,Given s = “eceba”, T is...
分类:其他好文   时间:2015-01-28 06:15:59    阅读次数:149
[leetcode]Longest Valid Parentheses
Longest Valid Parentheses.
分类:其他好文   时间:2015-01-28 00:43:26    阅读次数:202
LeetCode --- 5. Longest Palindromic Substring
题目链接:Longest Palindromic Substring Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic ...
分类:其他好文   时间:2015-01-27 23:35:02    阅读次数:144
LeetCode --- 3. Longest Substring Without Repeating Characters
题目链接:Longest Substring Without Repeating Characters Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters...
分类:其他好文   时间:2015-01-27 23:33:44    阅读次数:176
leetcode_3_Longest Substring Without Repeating Characters
描述: Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is ...
分类:其他好文   时间:2015-01-27 20:21:40    阅读次数:149
leetcode_5_Longest Palindromic Substring
描述: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 思路: 刚开始非常天...
分类:其他好文   时间:2015-01-27 20:21:30    阅读次数:205
LeetCode Longest Palindromic Substring 最长回文子串
Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring.(最长回文子串) 中心扩展法: pub...
分类:其他好文   时间:2015-01-27 18:31:08    阅读次数:151
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