Question

请帮助理解为什么，在下面，我没有得到数组中最小值的输出。使用扫描仪输入值，程序也应输出最小数字。

**不使用.sort。

import java.util.Scanner;

public class Test {

public static void main(String[] args) {
    // TODO Auto-generated method stub

    int[] list;
    list = new int[10000];
    int sum = 0;
    double avr = 0;
    int min = list [0];
    int max = list [0];
    int x = 0;
    int value;

    Scanner input = new Scanner(System.in);
    System.out.print("Add number " + (x + 1) + ": ");
    value = input.nextInt();

    while (x <= list.length && (value != -1 || x == 0)) {
        list[x] = value;
        x++;
        System.out.print("Add number " + (x + 1) + ": ");
        value = input.nextInt();
    }

    for (int i = 0; i < list.length; i++) {
        sum += list[i];
        avr = sum / x;

        if(list[i] > max)
            max = list[i]; 

        if( list[i] < min )
            min = list[i];

    }


    System.out.println("The sum of all values are: " + sum);
    System.out.println("The average value of the numbers are: " + avr);
    System.out.println("The maximum value of the numbers are: " + max);
    System.out.println("The minimum value of the numbers are: " + min);


}

}

Answer 1

我会建议最低限度的两项改进。

将您的min初始化为第一个value。现在你已经将min初始化为0，并且用户从不输入任何小于0的数字。这就是你持续0分钟的原因。
不要运行你的循环1000次。运行它的次数与非零元素一样多。

请参阅以下工作代码段：

 int[] list;
        list = new int[10000];
        int sum = 0;
        double avr = 0;
        int min = list [0];
        int max = list [0];
        int x = 0;
        int value;

        Scanner input = new Scanner(System.in);
        System.out.print("Add number " + (x + 1) + ": ");
        value = input.nextInt();
        min = value;
        while (x <= list.length && (value != -1 || x == 0)) {
            list[x] = value;
            x++;
            System.out.print("Add number " + (x + 1) + ": ");
            value = input.nextInt();
        }

        for (int i = 0; i < list.length && list[i] !=0; i++) {
            sum += list[i];
            avr = sum / x;

            if(list[i] > max)
                max = list[i]; 

            if( list[i] < min )
                min = list[i];

        }


        System.out.println("The sum of all values are: " + sum);
        System.out.println("The average value of the numbers are: " + avr);
        System.out.println("The maximum value of the numbers are: " + max);
        System.out.println("The minimum value of the numbers are: " + min);

如何理解为什么这不会返回最小值？

1 个答案: