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Leetcode | Trapping Rain Water
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining....
分类:移动开发   时间:2014-05-19 19:20:26    阅读次数:332
Leetcode | Construct Binary Tree from Inorder and (Preorder or Postorder) Traversal
Construct Binary Tree from Preorder and Inorder TraversalGiven preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume...
分类:其他好文   时间:2014-05-19 18:43:40    阅读次数:177
Leetcode | Combination Sum I && II
Combination Sum IGiven a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T...
分类:其他好文   时间:2014-05-19 16:41:14    阅读次数:269
【LeetCode】Rotate List
Given a list, rotate the list to the right bykplaces, wherekis non-negative.For example:Given1->2->3->4->5->NULLandk=2,return4->5->1->2->3->NULL.start...
分类:其他好文   时间:2014-05-19 16:25:44    阅读次数:234
【leetcode】Copy List with Random Pointer
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy ...
分类:其他好文   时间:2014-05-19 15:50:28    阅读次数:447
Leetcode | Jump Game I && II
Jump Game IGiven an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents ...
分类:其他好文   时间:2014-05-19 15:16:57    阅读次数:373
leetcode Best Time to Buy and Sell Stock III
思路:知道要用DP做,但是一开始思路是错的。后来参考了http://blog.csdn.net/pickless/article/details/12034365才意识到可以在整个区间的每一点切开,然后分别计算左子区间和右子区间的最大值,然后再用O(n)时间找到整个区间的最大值。看来以后碰到与2相关...
分类:其他好文   时间:2014-05-19 14:13:38    阅读次数:286
LeetCode 013 Roman to Integer
【题目】 Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 【题意】 把罗马数转换为整数 【思路】 罗马数字中只使用如下七个基值字母:M,D,C,L,X,V,I,分别用来表示1000、500、100、50、10、5、1。 大体思路是每个罗马字母对应的值相加即可, 但需要处理900, 400, 90, 40, 9, 4这几个特殊...
分类:其他好文   时间:2014-05-18 07:58:54    阅读次数:293
leetcode -day16 ZigZag Conversion
1、 ?? ZigZag Conversion The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibili...
分类:其他好文   时间:2014-05-18 07:56:49    阅读次数:407
LeetCode 014 Longest Common Prefix
【题目】 Write a function to find the longest common prefix string amongst an array of strings. 【题意】 求一组字符串的最长公共前缀 【思路】 使用归并思想求解 要求字符串[1,2,..,k,k+1,...n]的最大公共前缀,先分别求[1,2,...k]和[k+1,...,n]的公共前缀...
分类:其他好文   时间:2014-05-18 05:17:53    阅读次数:232
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