A Narcissistic Number is a number that is the sum of its own digits each raised to the power of the number of digits.
For example, take 153 (3 digits), which is narcisstic:
1^3 + 5^3 + 3^3 = 1 + 125 + 27 = 153
1652 (4 digits), is non-narcisstic:
1^4 + 6^4 + 5^4 + 2^4 = 1 + 1296 + 625 + 16 = 1938
Create a function that returns true or false depending upon whether the given number n is a Narcissistic number or not.
isNarcissistic(153) ➞ true
isNarcissistic(370) ➞ true
isNarcissistic(1652) ➞ false
N/A