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Solution Review: Armstrong Numbers

Explore how to write a Go function that identifies Armstrong numbers by using conditionals, type casting, and math operations. Understand how to extract digits, compute cube sums, and validate inputs, reinforcing fundamental Go programming techniques.

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Solution overview

The skeleton code provided with the challenge doesn’t contain the complete function definition. Let’s start with writing the function definition first. The isArmstrong function will take a number as an input and return a string and this information leads to the following function signature.

func isArmstrong (number int) string {
//...
}
Function signature

At ...