What is an Armstrong number?
An Armstrong number, also known as a narcissistic number, is a number that is equal to the sum of its own digits raised to the power of the number of digits. For example, 153 is an Armstrong number because 1^3 + 5^3 + 3^3 = 153.
How to determine if a number is an Armstrong number?
To determine if a number is an Armstrong number, we need to follow a few steps. Let’s go through each step in detail.
Step 1: Define the range of integers
The first step is to define the range of integers between which we want to find the Armstrong numbers. For example, if we want to find Armstrong numbers between 100 and 1000, our range would be from 100 to 1000.
Step 2: Iterate through the range
Once we have defined the range, we need to iterate through each number in the range. We can use a loop to go through each number one by one.
Step 3: Calculate the sum of the digits raised to the power of the number of digits
For each number in the range, we need to calculate the sum of its digits raised to the power of the number of digits. To do this, we can convert the number to a string and then iterate through each digit. We can use the power function to raise each digit to the power of the number of digits.
Step 4: Check if the calculated sum is equal to the original number
After calculating the sum of the digits raised to the power of the number of digits, we need to check if the calculated sum is equal to the original number. If they are equal, then the number is an Armstrong number.
Step 5: Print the Armstrong numbers found
Finally, we need to print the Armstrong numbers that we have found within the given range. We can store the Armstrong numbers in a list and then print the list at the end.
By following these steps, we can easily find Armstrong numbers between two given integers. It is a simple and straightforward process that can be implemented in any programming language.
