Given an integer array A, and an integer target, return the number of tuples i, j, k such that i < j < k and A[i] + A[j] + A[k] == target. As the answer can be very large, return it modulo 10^9 + 7. Example 1: Input: A = [1,1,2,2,3,3,4,4,5,5], targ…
A registration card number of PAT consists of 4 parts: the 1st letter represents the test level, namely, T for the top level, A for advance and B for basic; the 2nd - 4th digits are the test site number, ranged from 101 to 999; the 5th - 10th digits…
想必大家现在都比较喜欢使用svn(subversion)完成代码管理了,因为它的开源,轻巧,易用.但是这样一个宝贝如果不知道其正确的用法,也会让我们百思不得其解,甚至耽误项目进度,浪费程序员的心血和结晶. 下面就我们在外事项目中使用SVN的经验简单做个说明. 如何正确提交代码? 可能很多人用过微软的VISUAL SOURCESAFE 或者 Team Foundation Server,就认为那还不简单,checkout/checkin 不就完了吗.孰不知由于SVN采用了另一种源代码管…