1.4字符串 空格替换

 1 class Replacement {
 2 public:
 3     string replaceSpace(string iniString, int length) {
 4         // write code here
 5         for(int m=0;m<iniString.size();)
 6         {
 7             int i=iniString.find(" ",m);
 8             if(i==-1)
 9                 return iniString;
10             iniString.replace(i,1,"%20");
11             m=i;    
12         }
13         return iniString;
14     }
15 };