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用Javascript取float型小数点后两位,例22.127456取成22.13,如何做?
用Javascript取float型小数点后两位,例22.127456取成22.13,如何做?1. 最笨的办法....... [我就怎么干的.........]1functionget()2{3vars=22.127456+"";4varstr=s.substring(0,s.indexOf("."...
分类:编程语言   时间:2014-08-20 17:50:02    阅读次数:178
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
HDU4968:Improving the GPA(DP)
Problem Description Xueba: Using the 4-Point Scale, my GPA is 4.0. In fact, the AVERAGE SCORE of Xueba is calculated by the following formula: AVERAGE SCORE = ∑(Wi * SCOREi) / ∑(Wi) 1 where ...
分类:其他好文   时间:2014-08-20 14:08:06    阅读次数:173
【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
HDU 4968 Improving the GPA
Problem Description Xueba: Using the 4-Point Scale, my GPA is 4.0. In fact, the AVERAGE SCORE of Xueba is calculated by the following formula: AVERAGE SCORE = ∑(Wi * SCOREi) / ∑(Wi) 1 where SC...
分类:其他好文   时间:2014-08-20 00:07:55    阅读次数:310
CF261(D2)E DP
【题意】:给出n,m,代表n个点、及m条有向边。然后m行给出每条有向边的u,v,w(权值)。题目要求你求出最长路径的长度,是该路径满足权值严格递增。数据范围1?≤?wi?≤?10^5【知识点】:DP【题解】:一道看似图论的题目,其实可以利用递推的方法巧妙地解决。因为权值的最大值为10^5,所以可以用...
分类:其他好文   时间:2014-08-19 23:46:55    阅读次数:719
HDU 4968 Improving the GPA 多校第九场1009
Problem Description Xueba: Using the 4-Point Scale, my GPA is 4.0. In fact, the AVERAGE SCORE of Xueba is calculated by the following formula: AVERAGE SCORE = ∑(Wi * SCOREi) / ∑(Wi) 1 where SC...
分类:其他好文   时间:2014-08-19 19:02:25    阅读次数:422
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
LightOJ 1110 An Easy LCS LCS路径输出
点击打开链接题目链接 1110 - An Easy LCS PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB LCS means 'Longest Common Subsequence' that means ...
分类:其他好文   时间:2014-08-19 12:59:35    阅读次数:604
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