CSP：CSP认证考试：202104-1（灰度直方图）满分答案，Java版

一、题目：

二、Java满分答案

import java.util.ArrayList;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        String str = scanner.nextLine();
        String[] num = str.split(" ");
        ArrayList<Integer> ints = new ArrayList<>();

        for (String x : num) {
            ints.add(Integer.parseInt(x));
        }

        int n = ints.get(0);
        int L = ints.get(2);

        int[] result = new int[L];
        for (int i = 0; i < L; i++) {
            result[i] = 0;
        }

        for (int i = 0; i < n; i++) {
            str = scanner.nextLine();
            num = str.split(" ");
            for (String x : num) {
                result[Integer.parseInt(x)] = result[Integer.parseInt(x)] + 1;
            }
        }

        for (int i = 0; i < L-1; i++) {
            System.out.print(result[i]+" ");
        }
        System.out.print(result[L-1]);

    }

}