java - 最大和最小整数 - Deitel 的 Java 书中的练习

Question

Deitel 的《Java How To Program》第 10 版练习:

2.24 (Largest and Smallest Integers) Write an application that reads five integers and determines and prints the largest and smallest integers in the group. Use only the programming techniques you learned in this chapter.

我的代码:

// Ex. 2.24: LargestAndSmallestIntegers.java
// Obtain five numbers from the user, display largest and smallest from the group.
import java.util.Scanner;

public class LargestAndSmallestIntegers
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        int number1, 
            number2, 
            number3, 
            number4, 
            number5,
            largest,
            smallest;

        System.out.print("Enter first integer: ");
        number1 = input.nextInt();

        System.out.print("Enter second integer: ");
        number2 = input.nextInt();

        System.out.print("Enter third integer: ");
        number3 = input.nextInt();

        System.out.print("Enter fourth integer: ");
        number4 = input.nextInt();

        System.out.print("Enter fifth integer: ");
        number5 = input.nextInt();

        largest = number1;
        smallest = number1;

        if (number2 > largest)
            largest = number2;
        if (number3 > largest)
            largest = number3;
        if (number4 > largest)
            largest = number4;
        if (number5 > largest)
            largest = number5;

        if (number2 < smallest)
            largest = number2;
        if (number3 < smallest)
            largest = number3;
        if (number4 < smallest)
            largest = number4;
        if (number5 < smallest)
            largest = number5;

        System.out.printf("Largest of five integers is %d, and smallest is %d%n", largest, smallest);
    }
}

我做错了什么？为什么它不选取最大和最小的整数？

Answer 1

在第二个 block 中，检查smallest并分配给largest。