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HDU4961:Boring Sum
Problem Description Number theory is interesting, while this problem is boring. Here is the problem. Given an integer sequence a1, a2, …, an, let S(i) = {j|1j is a multiple of ai}. If S(i) is no...
分类:其他好文   时间:2014-08-20 16:34:02    阅读次数:184
编程之美——longest incremental sequence(LIS)
解法一:通过遍历得到(0:i)的LIS,时间复杂度O(N^2);具体思路于代码,如下: 1 #include 2 #include 3 using namespace std; 4 5 int longSub(int arr[],int n); 6 7 int main() 8 { 9 ...
分类:其他好文   时间:2014-08-20 15:44:12    阅读次数:147
oracle 手动增加序列值
1、select seq_name.nextval from dual; //假设得到结果56562、alter sequence seq_name increment by -5655; //注意是-(n-1)3、select seq_name.nextval from dual;//再查一遍,走...
分类:数据库   时间:2014-08-20 15:41:12    阅读次数:271
【Leetcode】Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given [100, 4, 200, 1, 3, 2],The longest...
分类:其他好文   时间:2014-08-20 14:01:12    阅读次数:184
【线段树】HDU 3397 Sequence operation 区间合并
操作 Change operations: 0 a b change all characters into '0's in [a , b] 1 a b change all characters into '1's in [a , b] 2 a b change all '0's into '1's and change all '1's into '0's in [a, b] Out...
分类:其他好文   时间:2014-08-20 12:36:52    阅读次数:392
HDU - 4961 Boring Sum
Problem Description Number theory is interesting, while this problem is boring. Here is the problem. Given an integer sequence a1, a2, …, an, let S(i) = {j|1j is a multiple of ai}. If S(i) is not ...
分类:其他好文   时间:2014-08-20 00:07:25    阅读次数:210
每日算法之四十二:Permutation Sequence (顺序排列第k个序列)
The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3): "123""132""213""231""3...
分类:其他好文   时间:2014-08-19 22:34:25    阅读次数:288
HDU 1005 Number Sequence (数学规律)
Number SequenceTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 104190Accepted Submission(s): 25232...
分类:其他好文   时间:2014-08-19 20:29:45    阅读次数:222
poj之最长公共子序列
题目:poj 1458   Common Subsequence 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 = is a...
分类:其他好文   时间:2014-08-19 19:04:25    阅读次数:182
poj之最长递增子序列
题目:POJ 2533    Longest Ordered Subsequence Description A numeric sequence of ai is ordered if a1 a2 aN. Let the subsequence of the given numeric sequence (a1, a2, ..., aN) be any sequence (ai1...
分类:其他好文   时间:2014-08-19 16:37:44    阅读次数:218
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