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[POJ Solutions] Brackets Sequence
This problem can be solved elegantly using dynamic programming.We maintain two arrays:cnt[i][j] --- number of parentheses needed to add within s[i..j]...
分类:其他好文   时间:2015-06-22 19:12:15    阅读次数:202
#16 3Sum Closest
题目链接:https://leetcode.com/problems/3sum-closest/ Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three i...
分类:其他好文   时间:2015-06-22 17:56:00    阅读次数:110
leetcode——171 Excel Sheet Column Number (表格字母与整数的映射)
解题思路: A—Z 26个字母,AA出现27,则进制为26,。因此只需将给定字符串从高为到低位依次遍历,然后运算即可。...
分类:其他好文   时间:2015-06-22 11:10:14    阅读次数:135
leetCode(19):Count Complete Tree Nodes
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is completely filled,...
分类:其他好文   时间:2015-06-22 09:55:34    阅读次数:149
LeetCode 202. Happy Number
非常巧,前后做了两次,写的代码思路、甚至是空行都是一模一样的... 代码: class Solution { public: bool isHappy(int n) { if (int_set.find(n) != int_set.end()) { return false; } int_set.insert(n)...
分类:移动开发   时间:2015-06-22 09:53:56    阅读次数:140
Single Number II
Dscription:Given an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a linear r...
分类:其他好文   时间:2015-06-21 18:21:49    阅读次数:83
Oracle学习(二)—简单查询
1、SCOTT用户之中的主要数据表 dept、emp、salgrade、bonus。观察四张表结构(语法:DESC 表)。 |·部门表:dept NO. 字段 类型 描述 1、 DEPTNO NUMBER...
分类:数据库   时间:2015-06-21 18:21:21    阅读次数:198
[LeetCode-JAVA] The Skyline Problem
题目:题目太长了,见链接-- >The Skyline ProblemNotes:The number of buildings in any input list is guaranteed to be in the range[0, 10000].The input list is alread...
分类:编程语言   时间:2015-06-21 17:13:06    阅读次数:166
#9 Palindrome Number
题目链接:https://leetcode.com/problems/palindrome-number/ Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. Some hints: Could negative inte...
分类:其他好文   时间:2015-06-21 15:52:27    阅读次数:145
poj3254 Corn Fields
Description Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn for the cows on a number of squares...
分类:其他好文   时间:2015-06-21 14:33:04    阅读次数:155
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