HDU——1020Encoding（水题，string过）

Encoding

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 36575    Accepted Submission(s): 16205

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

前两次做了没感觉，都WA了0.0

第三遍突然有feel了。

代码：

#include<iostream>
#include<string>
#include<map>
#include<vector>
using namespace std;
int main(void)
{
    int n;
    cin>>n;
    while (n--)
    {
        string str;
        cin>>str;
        int i,j,len=str.size(),sum=1;
        for (i=0; i<len; i++)
        {
            if(str[i]==str[i+1])
            {
                sum++;
            }
            else
            {
                if(sum==1)
                    cout<<str[i];
                else
                    cout<<sum<<str[i];
                sum=1;
            }
        }
        cout<<endl;
    }
    return 0;
}