Java program to sort the elements of left/primary diagonal of an array using a bubble sort technique. Showing java.lang.ArrayIndexOutOfBoundsException

Question

  import java.util.*;
  class diag
  {
    void main()
    {
        Scanner sc=new Scanner (System.in);
        int m,i,j,tmp=0;
        System.out.println("Enter size of the array");
        m=sc.nextInt();
        int arr[][]=new int[m][m];
        int arr2[]=new int[m];
        System.out.println("Enter the elements");

        for(i=0;i<m;i++)
        {
            for(j=0;j<m;j++)
            {
                arr[i][j]=sc.nextInt();
            }
        }
        
        for(i=0;i<m;i++)
        {
            for(j=0;j<m;j++)
            {
                if(i==j)
                arr2[i]=arr[i][j];
            }
        }
        
        for(i=0;i<(m-1);i++)
        {
            for(j=0;j<(m-i-1);j++);
            {
                if(arr2[j+1]<arr2[j])
                {
                    tmp=arr2[j];
                    arr2[j]=arr2[j+1];
                    arr2[j+1]=tmp;
                }
            }
        }
        
        System.out.println("Sorted elements of the diagonal--");
        for(i=0;i<m;i++)
        System.out.print(arr2[i]+ " ");
    }

}

Index 2 out of bounds for length 2 at diag.main(diag.java:35)

Does this answer your question? [What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?](https://stackoverflow.com/questions/5554734/what-causes-a-java-lang-arrayindexoutofboundsexception-and-how-do-i-prevent-it) — Stultuske, Mar 23 '22 at 08:21
the error message seems clear enough. What is your question about it? — Stultuske, Mar 23 '22 at 08:22
Indeed, it shouldn't have a ;, but that line isn't causing the current issue. — Stultuske, Mar 23 '22 at 08:26
@Stultuske well, i'm afraid it might be causing that issue. since the condition in that `for` loop will be ignored — Baby, Mar 23 '22 at 08:31
.. Might indeed have an impact. But looking at the rest of the code, honestly doesn't make all that much sense to me considering the expected output and what I think 'll be printed. — Stultuske, Mar 23 '22 at 08:47

Java program to sort the elements of left/primary diagonal of an array using a bubble sort technique. Showing java.lang.ArrayIndexOutOfBoundsException

0 Answers0