第七章第三題（計算數字的出現次數）(Count occurrence of numbers) - 編程練習題答案

編寫程式，讀取在1到100 之間的整數，然後計算每個數出現的次數。假定輸入是以0 結束的。

下麵是這個程式的一個運行示例：

Write a program that reads the integers between 1and 100 and counts the occurrences of each. Assume the input ends with 0.Note that if a number occurs more than one time, the plural word “times” is used

in the output.

Enter the integers between 1 and 100: 2 5 6 5 4 3 23 43 2 0
2 occurs 2 times
3 occurs 1 time
4 occurs 1 time
5 occurs 2 times
6 occurs 1 time
23 occurs 1 time
43 occurs 1 time

下麵是參考答案代碼:

// https://cn.fankuiba.com
import java.util.Scanner;

public class Ans7_3_page236 {
    public static void main(String[] args) {
        int[] number = new int [101];
        Scanner input = new Scanner(System.in);
        int num;
        System.out.print("Enter the integers between 1 and 100: ");
        do {
            num = input.nextInt();
            number[num] = number[num] + 1;
        }
        while (num != 0);
        for (int i = 1; i < number.length; i++) {
            if (number[i] == 1) {
                System.out.println(i + " occurs " + number[i] + " time");
            }else if (number[i] > 1)
                System.out.println(i + " occurs " + number[i] + " times");
        }
    }
}

適用Java語言程式設計與數據結構（基礎篇）（原書第11版）Java語言程式設計（基礎篇）（原書第10/11版）

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