ArrayIndexOutOfBoundsException-ArrayLength

Question

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你好，你能帮我吗？我的代码有什么问题？我知道Array的长度或If语句有问题，但是我无法找出它。

非常感谢您！

import java.util.Scanner;

 class TripleSwapping {

 public static void main(String[] args) {

     Scanner in = new Scanner(System.in);
     System.out.println("Please enter the count of your elements: ");
     int count = in.nextInt();

     System.out.println("Your array before sorting: ");
     int A[] = new int [count];
     for (int i = 0; i < 10; i++) {
         A[i]=in.nextInt();
    }
     boolean changed =false;
     do {
         for (int i = 0; i < A.length-1; i++) {
             if (!(A[i+1]>A[i]) && !(A[i+1] > A[i+2])) {
                 int temp;
                 temp = A[i];
                 A[i]= A[i+1];
                 A[i+1] =temp;
               }
         }
         for (int i = 0; i < A.length-1; i++) {
             if (A[i] >A[i+1]) {
                  int temp;
                 temp = A[i];
                 A[i]= A[i+1];
                 A[i+1] =temp;
               changed=true;  
             }

         }


     }while(changed);

     System.out.println("Your array after swapping");

     for (int i = 0; i < A.length; i++) {
         System.out.println(A[i]);
     }

}

}

Answer 1

您将收到ArrayIndexOutOfBoundsException，因为如果输入的数字小于10，则会引发异常。

for (int i = 0; i < 10; i++) {
    A[i]=in.nextInt();
}

代替

for (int i = 0; i < count; i++) {
    A[i]=in.nextInt();
}