Question

Write a program with a function named isEqualArr that accepts a pair of arrays of integers as parameters and returns true if the arrays contain the same elements in the same order. If the arrays are not the same length, your function should return false.

For example, if the following arrays are declared:

int[] arr1 = {10, 20, 30, 40, 50, 60};

int[] arr2 = {10, 20, 30, 40, 50, 60};

int[] arr3 = {20, 3, 50, 10, 68};

The call isEqualArr(arr1, arr2) returns true but the call isEqualArr(arr1, arr3) returns false.

Answer 1

public class ArrayEqual {

    public static boolean isEqualArr(int[] arr1, int[] arr2) {
        if (arr1 == null || arr2 == null || arr1.length != arr2.length) {
            return false;
        }
        for (int i = 0; i < arr1.length; i++) {
            if (arr1[i] != arr2[i]) {
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) {
        int[] arr1 = {10, 20, 30, 40, 50, 60};
        int[] arr2 = {10, 20, 30, 40, 50, 60};
        int[] arr3 = {20, 3, 50, 10, 68};
        System.out.println(isEqualArr(arr1, arr2));
        System.out.println(isEqualArr(arr1, arr3));
    }
}