Leap Year Checking

Leap Year Checking

Undefined

Check if the given year is leap year. A year is a leap year if it is divisible by 4, except for end-of-century years which must be divisible by 400. This means that the year 2000 was a leap year, although 1900 was not.

example

Input: Integer (number).

Output: Logic value (boolean).

Examples: 

assert.strictEqual(isLeapYear(2000), true);
assert.strictEqual(isLeapYear(1900),...
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