Question

How to check if the digits of a number are prime in Go

Answer 1

package main

import (
	"fmt"
)

func isPrime(n int) bool {
	// prime digits = 2, 3, 5, 7

	if n == 2 || n == 3 || n == 5 || n == 7 {
		return true
	}

	return false
}

func isDigitsPrime(n int) bool {
	for n > 0 {
		if !isPrime(n % 10) {
			return false
		}
		n = n / 10
	}

	return true
}

func main() {
	n := 7355727

	if isDigitsPrime(n) {
		fmt.Print("yes")
	} else {
		fmt.Print("no")
	}
}



/*
run:

yes

*/

 

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