Leap Year Determination

Problem

A leap year is a year that includes February 29th, occurring every 4 years.
Given a specific year year, write a function solution that determines if the year is a leap year.

The rules for determining leap years are as follows:

• A year is a leap year if it is divisible by 4.
• However, a year is not a leap year if it is divisible by 100.
• A year is a leap year if it is divisible by 400.

Constraints

• year is a natural number between 1 and 4000 inclusive.
• If year is a leap year, return the string YES; otherwise, return NO.

Test Case

Explanation for Test Case 1

• When year = 2000, it is divisible by 400, so it is a leap year. Return YES.

Explanation for Test Case 2

• When year = 1900, it is divisible by 100 but not by 400, so it is not a leap year. Return NO.

Explanation for Test Case 3

• When year = 2024, it is divisible by 4 but not by 100, so it is a leap year. Return YES.