The competent programmer is fully aware of the strictly limited size of his own skull; therefore he approaches the programming task in full humility, and among other things he avoids clever tricks like the plague. Edsger Dijkstra
An Armstrong Number is a number that is the sum of its own digits each raised to the power of the number of digits
Armstrong numbers are those numbers in which sum of cube of all digits provides the same number.
1^3 = 1
5^3 = 125
3^3 = 27
1^3 + 5^3 + 3^3
= 1 + 125 + 27
153 is an Armstrong Number! 12 is not an Armstrong Number!