[백준/자바] 1475번 방 번호

https://www.acmicpc.net/problem/1475

1475번: 방 번호

import java.util.Scanner;
public class mar15 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner s=new Scanner(System.in);
		String room=s.next();
		int arr[]=new int[10];
		int count=0;
		for(int i=0;i<room.length();i++) {
			int number=room.charAt(i)-48;
			if(number==6&&arr[9]<count) {
				arr[9]++;
			}else if(number==9&&arr[6]<count) {
				arr[6]++;
			}else if(arr[number]==count) {
				count++;
				arr[number]++;
			}else {
				arr[number]++;
			}
		}
		System.out.print(count);

	}

}