7-15 删除字符串中的子串 (20 分)转角做对一道题

Tomcat is a male ccatat
cat

Tom is a male 

#include<iostream> 
using namespace std;
int main(){
	string s,c;
	getline(cin,s);
	getline(cin,c);
	for(int i=0;i<s.length()&&(i+c.length())<=s.length();i++){
		string s1,s2;
		s1=s.substr(i,c.length());
		if(s1==c){
			s1=s.substr(i+c.length());
			s=s.substr(0,i)+s1;
			i=0;
		}
	}
	cout<<s<<endl;
	return 0;
}

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        String s1=sc.nextLine();
        String s2=sc.nextLine();
        String s3=s1.replace(s2,"");
        while(!s1.equals(s3)){
            s1=s3;
            s3=s1.replace(s2,"");
        }
        System.out.println(s3);
    }
}