Is Even
Write a function isEven that takes an integer and returns true if it is even, false otherwise.
Function Signature
function isEven(num);
Example 1:
Input:
num = 4
Output:true
Explanation: The number 4 is even.
Example 2:
Input:
num = 7
Output:false
Explanation: The number 7 is not even.
Example 3:
Input:
num = 0
Output:true
Explanation: The number 0 is even.
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