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1038 统计同成绩学生

本题要求读入 N 名学生的成绩,将获得某一给定分数的学生人数输出。

输入格式:

输入在第 1 行给出不超过 105 的正整数 N,即学生总人数。随后一行给出 N 名学生的百分制整数成绩,中间以空格分隔。最后一行给出要查询的分数个数 K(不超过 N 的正整数),随后是 K 个分数,中间以空格分隔。

输出格式:

在一行中按查询顺序给出得分等于指定分数的学生人数,中间以空格分隔,但行末不得有多余空格。

输入样例:

tex
10
60 75 90 55 75 99 82 90 75 50
3 75 90 88
10
60 75 90 55 75 99 82 90 75 50
3 75 90 88

输出样例:

tex
3 2 0
3 2 0

Solution:

java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;

public class Main {
    static StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));

    static int nextInt() throws IOException {
        in.nextToken();
        return (int) in.nval;
    }

    public static void main(String[] args) throws IOException {
        int n = nextInt();
        int[] score = new int[101];
        for (int i = 0; i < n; i++) {
            score[nextInt()]++;
        }
        int k = nextInt();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < k; i++) {
            if (i > 0) sb.append(" ");
            sb.append(score[nextInt()]);
        }
        System.out.println(sb);
    }
}
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;

public class Main {
    static StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));

    static int nextInt() throws IOException {
        in.nextToken();
        return (int) in.nval;
    }

    public static void main(String[] args) throws IOException {
        int n = nextInt();
        int[] score = new int[101];
        for (int i = 0; i < n; i++) {
            score[nextInt()]++;
        }
        int k = nextInt();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < k; i++) {
            if (i > 0) sb.append(" ");
            sb.append(score[nextInt()]);
        }
        System.out.println(sb);
    }
}

Released under the MIT License.