字符串原地压缩

#include "stdafx.h"
#include <iostream>

using namespace std;

//字符串原地压缩
void CompressString(char *str)
{
if (NULL == str)
{
return;
}
int count = 0;
char *newStr = str;
char ch = *str;
while (*str != '\0')
{
if (*str != ch)
{
*newStr++ = ch;
if (count > 1) //当字符只出现一次时，1省略不写
{
*newStr++ = '0' + count;
}
count = 1;
ch = *str;
}
else
{
count++;
}
str++;
if (*str == '\0')
{
*newStr++ = ch;
if (count > 1) //当字符只出现一次时，1省略不写
{
*newStr++ = '0' + count;
}
}
}
*newStr = '\0';
}

int _tmain(int argc, _TCHAR* argv[])
{
char src[]  = "eeeeeaaaff";
CompressString(src);
cout<<src<<endl;

cout<<endl;
return 0;
}