摘要：
大意 ：在一段小写字母组成的字符串中插入一个小写字母，问有几种情况 Input a Output 51 Input hi Output 76 对于每个字母，在左右插空有一种重复的情况，去除即可 为 26*（n+1）-n #include<stdio.h> #include<string.h> int 阅读全文
摘要：
A few years ago Sajjad left his school and register to another one due to security reasons. Now he wishes to find Amir, one of his schoolmates and goo 阅读全文