코테 연습 with Java - 6

백준 1759 암호만들기

import java.util.*;
import java.io.*;
public class Main {
	static int L;
	static int C;
	static ArrayList <String> alphabet;
	static boolean [] visited;
	static void make(int count, int index) {
		if(count == L) {
			int aeiou = 0;
			int other = 0;
			StringBuilder sb = new StringBuilder();
			for(int i = 0; i < C; i++) {
				if(visited[i]) {
					sb.append(alphabet.get(i));
					if(alphabet.get(i).equals("a") || alphabet.get(i).equals("e") || alphabet.get(i).equals("i") || 
							alphabet.get(i).equals("o") || alphabet.get(i).equals("u")) {
						aeiou ++;
					}
					else {
						other++;
					}
				}
			}
			if(aeiou > 0 && other >= 2)
				System.out.println(sb);
		}
		for(int i = index; i < C; i++) {
				visited[i] = true;
				make(count+1, i+1);
				visited[i] = false;
		}
		
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc  =  new Scanner(System.in);
		L = sc.nextInt();
		C = sc.nextInt();
		visited = new boolean [C];
		alphabet = new ArrayList<String>();
		for(int i = 0; i < C; i++) {
			alphabet.add(sc.next());
		}
		alphabet.sort(null);
		make(0,0);

	}

}