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Javaを用いた平均値の出し方 高校数学Ⅰ

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SampleCode

package Sample5;

import java.util.Scanner;

public class Sample39 {
	public static void main(String[] args){
		
		Scanner scan = new Scanner(System.in);
		
		System.out.println("平均値を求めます");
		System.out.println("データの個数を入力してください");
		
		int a = scan.nextInt();
		
		double[] num = new double[a]; // 入力した数値を要素の個数として定義する
		double sum = 0.0;
		for(int i = 0; i < num.length; i++){
			System.out.println((i + 1) +"個めのデータを入力してください");
			num[i] = scan.nextDouble();
			
		}
		
		for(int i = 0; i < num.length; i++){
			sum += num[i];  //入力された総和を求める
			
		}
		
		System.out.println("平均点は "+ (sum/num.length)+ " 点です");
		scan.close();
	}

}

データの個数は整数でそれ以外は小数も可です
※分数は未確認

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