Category Archives: programming

In this post, we are going to write a program to check armstrong number in java.

Given a number x, write a code to check whether a number x is Armstrong Number or not. Let’s first understand what is Armstrong number?

Armstrong number

An Armstrong number is an n-digit number that is equal to the sum of the nth powers of its digits.

For example – 153, 371 is an Armstrong number.

Example 1: 153 has 3 digits.

153 : 1³ + 5³ + 3³ = 153

Example 2 – Take an example of 6 which has 1 digit.

6: 6¹ = 6 It’s an Armstrong number

Example 3 – Take another example let’s say 15, it has 2 digits.

15 : 1² + 5² = 26

So 15 is not an Armstrong number.

Example 4 – This time let’s take bigger number 1634, it has 4 digits.

1634 : 1⁴ + 6⁴ + 3⁴ + 4⁴ = 1634

So, we can say 1634 is a 4 digit armstrong number.

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