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2014年12月12日

摘要： Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word. Return all such p 阅读全文

posted @ 2014-12-12 01:25 LiBlog 阅读(118) 评论(0) 推荐(0)

Leetcode-Binary Tree Postorder Traversal

摘要： Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3return [3,2,... 阅读全文

posted @ 2014-12-12 00:50 LiBlog 阅读(154) 评论(0) 推荐(0)

2014年12月11日

Leetcode-LRU Cache

摘要： Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the... 阅读全文

posted @ 2014-12-11 23:59 LiBlog 阅读(162) 评论(0) 推荐(0)

2014年12月10日

Leetcode-Find Peak Element

摘要： A peak element is an element that is greater than its neighbors.Given an input array where num[i] ≠ num[i+1], find a peak element and return its index... 阅读全文

posted @ 2014-12-10 07:06 LiBlog 阅读(187) 评论(0) 推荐(0)

2014年11月29日

Leetcode-Roman to Integer

摘要： Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. Solution: Solution 2: Whenever the value o 阅读全文

posted @ 2014-11-29 10:52 LiBlog 阅读(166) 评论(0) 推荐(0)

Leetcode-Longest Common Prefix

摘要： Write a function to find the longest common prefix string amongst an array of strings.Solution: 1 public class Solution { 2 public String longestC... 阅读全文

posted @ 2014-11-29 10:36 LiBlog 阅读(135) 评论(0) 推荐(0)

Leetcode-Remove Nth Node From End of List

摘要： Given a linked list, remove the nth node from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = 2. After ... 阅读全文

posted @ 2014-11-29 10:26 LiBlog 阅读(115) 评论(0) 推荐(0)

Leetcode-Valid Parentheses

摘要： Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.The brackets must close in the c... 阅读全文

posted @ 2014-11-29 10:08 LiBlog 阅读(154) 评论(0) 推荐(0)

Leetcode-Remove Element

摘要： Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat... 阅读全文

posted @ 2014-11-29 09:58 LiBlog 阅读(117) 评论(0) 推荐(0)

Leetcode-Implement strStr()

摘要： Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Update (2014-11-02):The s... 阅读全文

posted @ 2014-11-29 07:46 LiBlog 阅读(164) 评论(0) 推荐(0)

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