Issues with returning an int array in Java

Question

I am trying to return an array after reversing(or at least that's what I think I did; not the issue) inside this function but i am getting errors like:

This method must return a result of type int[]

public static int[] arrayLeftRotation(int[] a, int n, int k) 
{   
    int iter = k-1;
    int arr[] = new int[n];
    for(int i=0; i<n;i++)
    {
        if(iter >4)
        {
            iter = 0;
        }
        arr[i] = a[iter];
        iter++;

        return arr;
    }
}

put return outside the loop.

simple guy
– simple guy

2017-09-18 06:23:50 +00:00
Commented Sep 18, 2017 at 6:23 — simple guy
– simple guy, Commented Sep 18, 2017 at 6:23

Naman · Accepted Answer · 2017-09-18 01:01:06Z

1

Well since there is a missing return statement. Also, you can avoid a for loop if you place a return inside it without any specific condition, since that would return after the first iteration itself. So move the return statement out of your for loop and it should compile as :

public static int[] arrayLeftRotation(int[] a, int n, int k) {   
    int iter = k-1;
    int arr[] = new int[n];
    for(int i=0; i<n;i++) {
        if(iter > 4) {
            iter = 0;
        }
        arr[i] = a[iter];
        iter++;           
    }
    return arr;
}

answered Sep 18, 2017 at 1:01

Naman

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