Conditional Probability Example:In a batch, there are 80% C programmers, and 40% are Java and C programmers. What is the probability that a C programmer is also Java programmer? Let A --> Event that a student is Java programmer B --> Event that a st
刷题备忘录,for bug-free leetcode 396. Rotate Function 题意: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k
题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5280 Senior's Array Description One day, Xuejiejie gets an array $A$. Among all non-empty intervals of $A$, she wants to find the most beautiful one. She defines the beauty as the sum of the interval. Th
Problem Statement You are given a positive integer N. Find the number of the pairs of integers u and v(0≦u,v≦N) such that there exist two non-negative integers a and b satisfying a xorb=u and a+b=v. Here, xor denotes the bitwise exclusive OR. Since i