// Armstrong Number — EASY

// Category: math

A number is an Armstrong number if the sum of its digits each raised to the power of the number of digits equals the number itself.

For example, `153` is Armstrong because `1³ + 5³ + 3³ = 153`.

Given an integer `n`, return `true` if it is an Armstrong number, `false` otherwise.

Example: n = 153

Output: true