Check if an array is sorted, return true or false

Question

I am writing an easy program the just returns true if an array is sorted else false and I keep getting an exception in eclipse and I just can\'t figure out why. I was wonder

Answer 1

To check whether array is sorted or not we can compare adjacent elements in array.

Check for boundary conditions of null & a.length == 0

public static boolean isSorted(int[] a){    

    if(a == null) {
        //Depends on what you have to return for null condition
        return false;
    }
    else if(a.length == 0) {
        return true;
    }
    //If we find any element which is greater then its next element we return false.
    for (int i = 0; i < a.length-1; i++) {
        if(a[i] > a[i+1]) {
            return false;
        }           
    }
    //If array is finished processing then return true as all elements passed the test.
    return true;
}