[Programmers] Lv.0 / 문자열 곱하기 / Java

문제

 

풀이

class Solution {
    public String solution(String my_string, int k) {
        String answer = "";
        for(int i = 0; i < k; i++) {
            answer += my_string;
        }
        return answer;
    }
}

class Solution {
    public String solution(String my_string, int k) {
        return my_string.repeat(k);
    }
}

import java.util.*;

class Solution {
    public String solution(String my_string, int k) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < k; i++) {
            sb.append(my_string);
        }
        return sb.toString();
    }
}

 

출처

https://school.programmers.co.kr/learn/courses/30/lessons/181940