命运在指间

题意：   给你一个串s，让你去计算一下有多少符合串中相同字母的个数不大于k值的子串的数目思路： 尺取法； 设两个指针h，t，让t 向右移动，确保现在的子串满足题目要求，不满足的话，把h向右移动，直到满足为止，当t到串的尾部停止；CODE#include#include#include#define LL __int64int a[30]; char s[1100

DescriptionYou, as a member of a development team for a new spell checking program, are to write a module that will check the correctness of given words using a known dictionary of all correct words

The Genographic Project is a research partnership between IBM and The National Geographic Society that is analyzing DNA from hundreds of thousands of contributors to map how the Earth was populated.