[알고리즘문제풀기] 문자열 반복해서 출력하기

문제

내가 작성한 정답

String

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int n = sc.nextInt();
        String answer = "";
        for(int i=0; i<n; i++) {
            answer += str;
        }
        System.out.println(answer);
    }
}

StringBuilder, StringBuffer

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int n = sc.nextInt();
        StringBuilder answer = new StringBuilder();
        // StringBuffer answer = new StringBuffer();
        for(int i=0; i<n; i++) {
            answer.append(str);
        }
        System.out.println(answer);
    }
}

다른 사람들의 정답

repeat

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int n = sc.nextInt();
        System.out.println(str.repeat(n));
    }
}