LCM Cardinality
Input: Standard Input
Output: Standard Output
Time Limit: 2 Seconds
A pair of numbers has a unique LCM but a single number can be the LCM of more than one possible pairs. For ex...
分类:
其他好文 时间:
2014-10-17 15:37:49
阅读次数:
260
例: 表 test的 create_time 为 timestamp 类型. 创建create_time 索引 执行 select * from test create_time = ‘2014-10-17‘ 。possible_keys 为 null 执行 select * from test create_time = ‘20141017000000‘ ...
分类:
数据库 时间:
2014-10-17 12:16:12
阅读次数:
345
LeetCode:SubsetsGiven a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution...
分类:
其他好文 时间:
2014-10-17 10:27:24
阅读次数:
293
全排列问题。常用的排列生成算法有序数法、字典序法、换位法(Johnson(Johnson-Trotter)、轮转法以及Shift cursor cursor* (Gao & Wang)法。
【题目】
Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have...
分类:
其他好文 时间:
2014-10-16 23:05:23
阅读次数:
302
[leetcode]Given a collection of numbers that might contain duplicates, return all possible unique permutations....
分类:
其他好文 时间:
2014-10-14 12:20:08
阅读次数:
247
[leetcode]Given a collection of numbers, return all possible permutations....
分类:
其他好文 时间:
2014-10-14 09:58:18
阅读次数:
183
鏈接: http://poj.org/problem?id=1458
Description:
A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = another sequence Z =...
分类:
其他好文 时间:
2014-10-13 16:43:09
阅读次数:
257
Problem:Implementatoito convert a string to an integer.Hint:Carefully consider all possible input cases. If you want a challenge, please do not see be...
分类:
其他好文 时间:
2014-10-13 01:47:48
阅读次数:
187
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
For example,
If n = 4 and k = 2, a solution is:
[
[2,4],
[3,4],
[2,3],
[1,2],
[1,3],
[1,4],
]...
分类:
其他好文 时间:
2014-10-12 20:53:58
阅读次数:
191
Given a set of distinct integers, 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 exa...
分类:
其他好文 时间:
2014-10-12 18:17:08
阅读次数:
242