Question

How to calculate the LCM (Least Common Multiple) of 3 numbers in Go

Answer 1

package main

import (
	"fmt"
)

func max3(a, b, c int) int {
	maxVal := a

	if b > maxVal {
		maxVal = b
	}
	if c > maxVal {
		maxVal = c
	}

	return maxVal
}

func getLMC(a, b, c int) int {
	lmc := max3(a, b, c)

	for {
		if lmc%a == 0 && lmc%b == 0 && lmc%c == 0 {
			return lmc
		}
		lmc++
	}
}

func main() {
	a, b, c := 12, 15, 40

	fmt.Printf("The LCM (Least Common Multiple) is: %d\n", getLMC(a, b, c))
}



/*
run:

The LCM (Least Common Multiple) is: 120

*/

 

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Answer 2

package main

import "fmt"

func getLMC(a, b int) int {
    lmc := b

    if a > b {
        lmc = a
    }

    for {
        if lmc%a == 0 && lmc%b == 0 {
            return lmc
        }
        lmc++
    }
}

func main() {
    a, b, c := 12, 15, 40

    fmt.Println("The LCM (Least Common Multiple) is:", getLMC(getLMC(a, b), c))
}


/*
run:

The LCM (Least Common Multiple) is: 120

*/

 

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