495. Armstrong Number

Given an integer n, return true if and only if it is an Armstrong number.

The k-digit number n is an Armstrong number if and only if the kth power of each digit sums to n.

Example 1:

Input: n = 9474

Output: true

Explanation: 9474 is a 4-digit number, and 9474 = 94 + 44 + 74 + 44 = 9474.

Example 2:

Input: n = 9475

Output: false

Explanation: 9475 is a 4-digit number, but 9475 != 94 + 44 + 74 + 54 = 9843.

Now Your Turn!

Pick the correct output for the given input

Input: n = 8208

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Constraints:

  • 1 <= n <= 108

Hints

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Interview Follow-up Questions

0
class Solution {
public:
bool isArmstrong(int N) {
// Your code goes here
}
};
Test Case

Input:

N
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