BOJ 1700 멀티탭 스케줄링

[Holdm2t1ght]

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[Holdm2t1ght]

package com.w5;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.util.stream.IntStream;

public class BOJ1700 {
	static int N, K, cnt;
	static int[] digitCnt, multiTab;
	static Queue<Integer> queue;
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("BOJ1700.txt")));
		//BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		
		N = Integer.parseInt(st.nextToken());
		K = Integer.parseInt(st.nextToken());
		digitCnt = new int[100];
		queue = new LinkedList<>();
		
		st = new StringTokenizer(br.readLine());
		for(int i = 0;i<K;i++) {
			int digit = Integer.parseInt(st.nextToken());
			digitCnt[digit-1]++;
			queue.offer(digit);
		}
		
		cnt = 0;
		multiTab = new int[N];
		countingN();
		
		System.out.println(cnt);
		
	}
	private static void countingN() {
		int idx = 0;
		while(multiTab[N-1] == 0 && !queue.isEmpty()) {
			int digit = queue.poll();
			digitCnt[digit-1]--;
			if(!check(digit)) {
				multiTab[idx++] = digit;
			}
		}
		
		while(!queue.isEmpty()) {
			int digit = queue.poll();
			digitCnt[digit-1]--;
			if(!check(digit)) {
				multiTab[findMin()] = digit;
				cnt++;
			}
		}
		
	}
	private static int findMin() {
		int min = Integer.MAX_VALUE;
		int minTemp = 0;
		for(int i = 0;i<N;i++) {
			if(digitCnt[multiTab[i]-1] == 0) return i;
			else {
				if(!queue.isEmpty() && queue.peek() != multiTab[i]) {
					min = Math.min(min, digitCnt[multiTab[i]-1]);
					if(min == digitCnt[multiTab[i]-1]) minTemp = i;
				}
			}
		}
		return minTemp;
	}
	
	private static boolean check(int digit) {
		for(int i = 0;i<N;i++) {
			if(multiTab[i] == digit) return true;
		}
		return false;
	}

}