백준 알고리즘 2675번: 문자열 반복 - JAVA

https://www.acmicpc.net/problem/2675

 

 

 

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        int num = sc.nextInt();
        
        sc.nextLine();
        
        String[] result = new String[num];
        
        for(int i=0; i<num; i++) {
            String[] arr = sc.nextLine().split(" ");
            
            int n = Integer.parseInt(arr[0]);
            
            String tmp = "";
            for(int j=0; j<arr[1].length(); j++) {
                for(int k=0; k<n; k++) {
                    tmp += String.valueOf(arr[1]).charAt(j);
                }
             }
            result[i] = tmp; 
        }
        
        for(String str : result) {
            System.out.println(str);
        }
    }
}