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struct对齐详解
更加形象介绍了struct的size计算...
分类:其他好文   时间:2014-06-03 00:41:32    阅读次数:308
LeetCode: Partition List [086]
【题目】 Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x. You should preserve the original relative order of the nodes in each of the two partitions. For example, Given 1->4->3-...
分类:其他好文   时间:2014-06-03 00:02:29    阅读次数:270
LeetCode: Maximal Rectangle [085]
【题目】 Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area. 【题意】 给定一个由0和1填充的二维矩阵,找一个全是1的最大矩形 【思路】 扫描二维矩阵,凡是扫到值为1的块时候,以当前块为矩形的左上角区块拓展,找最大矩阵。 先找出以每个“1”区块为左上角区块的最大矩形,然后求出最大全局的最大矩...
分类:其他好文   时间:2014-06-02 23:08:07    阅读次数:289
【leetcode】 Longest Substring Without Repeating Characters
题目: 给定一个字符串,返回该串没有重复字符的最长子串。 分析: 1)子串:子串要求是连续的。 2)无重复,出现重复就断了,必须从新的位置开始。而新的位置就是重复字符第一次出现位置的下一个位置。 3)整个串可能没有一处重复。 那么,为了找出当前访问的字符是否出现过,要怎么做呢?当然是hash,O(1)的时间,而且既然是字符, 定义个255的hash table 就可以了,has...
分类:其他好文   时间:2014-06-01 10:48:31    阅读次数:206
LeetCode: Largest Rectangle in Histogram [084]
【题目】 Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram. Above is a histogram where width of each bar is 1, given height = [2,1,5,6,2,3]. The...
分类:其他好文   时间:2014-06-01 10:46:29    阅读次数:242
LeetCode: Scramble String [87]
【题目】 Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. Below is one possible representation of s1 = "great": great / gr eat / \ / g r e at / ...
分类:其他好文   时间:2014-06-01 09:41:05    阅读次数:196
LeetCode: Merge Sorted Array [088]
【题目】 Given two sorted integer arrays A and B, merge B into A as one sorted array. Note: You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are...
分类:其他好文   时间:2014-06-01 09:21:16    阅读次数:292
LeetCode: Gray Code [089]
【题目】 The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0. ...
分类:其他好文   时间:2014-06-01 09:16:29    阅读次数:242
LeetCode: Subsets II [091]
【题目】 Given a collection of integers that might contain duplicates, S, return all possible subsets. Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. For example, If S = [1,2,2], a solution ...
分类:其他好文   时间:2014-06-01 08:51:06    阅读次数:292
【leetcode】Generate Parentheses
题目: 给定整数n,返回n对匹配的小括号字符串数组。 For example, given n = 3, a solution set is: "((()))", "(()())", "(())()", "()(())", "()()()" 分析: 这种问题的模式是:1)问题的解有多个 ,2)每个解都是由多个有效的 ”步骤“ 组成的,3)变更以有解的某个或某些”步骤“ 可...
分类:其他好文   时间:2014-05-31 22:28:45    阅读次数:467
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