N과 M (3)

https://www.acmicpc.net/problem/15651

15651번: N과 M (3)

// 코드

import java.util.*;
import java.io.*;
 
public class Main{
  
  static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
  static int[] result = null;
  static int N;
  static int M;
  
  static void getResult(int x) throws Exception {
    if(x == M) {
      int myLen = result.length;
      for(int i=0; i<myLen; i++) {
        bw.write(String.valueOf(result[i]) + " ");
      }
      bw.newLine();
    } else {
      for(int i=1; i<=N; i++) {
        result[x] = i;
        getResult(x+1);
      }
    }
  }
  
  public static void main(String[] args) throws Exception {
    
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));  
    StringTokenizer st = new StringTokenizer(br.readLine());
    
    N = Integer.parseInt(st.nextToken());
    M = Integer.parseInt(st.nextToken());
    
    result = new int[M];
    getResult(0);
    
    br.close();
    bw.flush();
    bw.close();
  }
  
}