Encoding
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
ABC
ABBCCC
Sample Output
ABC A2B3C
分析:从头扫一遍字符串,统计每个连续的字母序列有多少个,然后边统计边输出。
#include <cstdio>
#include <cmath>
#include <cstring>
#include <ctime>
#include <iostream>
#include <algorithm>
#include <set>
#include <vector>
#include <sstream>
#include <queue>
#include <typeinfo>
#include <fstream>
#include <map>
#include <stack>
using namespace std;
#define INF 100000
typedef long long ll;
const int maxn=;
char s[maxn];
int main()
{
int n;
scanf("%d",&n);
while(n--){
scanf("%s",s);
int temp=;
for(int i=;i<=strlen(s);i++){
if(s[i]==s[i-]) temp++;
else{
if(temp==) printf("%c",s[i-]);
else printf("%d%c",temp,s[i-]);
temp=;
}
}
printf("\n");
}
return ;
}