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【LeetCode】Climbing Stairs (2 solutions)
Climbing StairsYou are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct way...
分类:其他好文   时间:2014-10-15 19:24:01    阅读次数:168
Distinct Subsequences
[leetcode]Given a string S and a string T, count the number of distinct subsequences of T in S....
分类:其他好文   时间:2014-10-15 13:53:50    阅读次数:147
POJ3061 Subsequence(二分前缀和法+尺取法)
二分+前缀和法 满足条件的子序列长度在(0,n)之间,sum[x+i]-sum[i]为从从第i个元素开始序列长度为x的元素的和。前缀和可在O(n)的时间内统计 sum[i]的值。再用二分找出满足条件的最小的子序列长度。 #include #include #include #include #include #include #include #include #include #inclu...
分类:其他好文   时间:2014-10-15 00:09:19    阅读次数:251
leetcode - Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? //第一种解法 class Solution { pub...
分类:其他好文   时间:2014-10-13 23:41:27    阅读次数:393
对于List的All,Any,Where,FirstOrDefault,Average,Sum,Distinct,Union,AddRange,RemoveRange,InsertRange,GetRange操作
对于List的All,Any,Where,FirstOrDefault,Average,Sum,Distinct,Union,AddRange,RemoveRange,InsertRange,GetRange操作
分类:其他好文   时间:2014-10-13 20:19:57    阅读次数:291
mysql查询所有记录,并去掉重复的记录
distinct(str)函数是用来去掉重复记录的,但是它只是针对某一个字段可以去重复。例如:select distinct(name)from tablename; 但是如果想把其他字段值的记录也查询出来,我一开始想的是使用select distinct(name) ,ta.* from tabl...
分类:数据库   时间:2014-10-13 18:34:11    阅读次数:271
POJ 1458 && HDU 1159 Common Subsequence (最長公共子序列)dp
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
POJ 1458-Common Subsequence(线性dp/LCS)
Common Subsequence Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 39009   Accepted: 15713 Description A subsequence of a given sequence is the given sequenc...
分类:其他好文   时间:2014-10-13 15:02:29    阅读次数:213
leetcode - Subsets
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
[LeetCode]N-Queens 八皇后问题扩展(经典深搜)
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-queens puzzle...
分类:其他好文   时间:2014-10-12 16:58:58    阅读次数:248
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