Math Decision Making
Beginner Level

Implement the method isEven that takes an integer as input and returns true if the number is even, and false if it is odd.

You need to write a function that checks whether a given integer is even or not. A number is called even if it is divisible by 2 (e.g., 0, 2, 4, 6...). If it's not divisible by 2, it is odd (e.g., 1, 3, 5...). The method should return:
  • true for even numbers
  • false for odd numbers
Example 1
Input:
n (int) = 4
Return:
(boolean) true
Example 2
Input:
n (int) = 7
Return:
(boolean) false
Example 3
Input:
n (int) = 0
Return:
(boolean) true
Example 4
Input:
n (int) = -2
Return:
(boolean) true
Example 5
Input:
n (int) = -3
Return:
(boolean) false

To check if a number is even:

  1. Use the modulus operator % to divide the number by 2.

  2. If the remainder is 0, the number is even.

  3. Otherwise, it’s odd.

Pseudocode:

Function isEven(n):
    If n mod 2 equals 0:
        Return true
    Else:
        Return false
Run your code to see the result.