杭电1020Encoding

地址：http://acm.hdu.edu.cn/showproblem.php?pid=1020

题目：

Problem Description

Given a string containing only 'A' - 'Z', we could encode it using the following method:

1. Each sub-string containing k same characters should be encoded to "kX" where "X" is the only character in this sub-string.

2. If the length of the sub-string is 1, '1' should be ignored.

 

Input

The first line contains an integer N (1 <= N <= 100) which indicates the number of test cases. The next N lines contain N strings. Each string consists of only 'A' - 'Z' and the length is less than 10000.

 

Output

For each test case, output the encoded string in a line.

 

Sample Input

2
ABC
ABBCCC

 

Sample Output

ABC
A2B3C

 

直接扫描一遍就好，不用用数组储存数据；

 #include <iostream>
 #include <algorithm>
 #include <cstdio>
 #include <cmath>
 #include <cstring>
 #include <queue>
 #include <stack>
 #include <map>
 #include <vector>

 #define PI acos((double)-1)
 #define E exp(double(1))
 using namespace std;

 int main (void)
 {
     int t,n;
     char a,b;
     cin>>t;
     scanf("%*c");
     while(t--)
     {
         n=;
         scanf("%c",&a);
         while(scanf("%c",&b)== && b!='\n')
         {
             if(a == b)
             {
                     n++;
             }
             else
             {
                 if(n>)
                     printf("%d%c",n,a);
                 else
                     printf("%c",a);
                 n=;
                 a=b;
             }
         }
         if(n>)
                 printf("%d%c\n",n,a);
             else
                 printf("%c\n",a);
     }
     return ;
 }