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659 B

collatzcountdown

Instructions

Write a function, CollatzCountdown, that returns the number of steps necessary to reach 1 using the collatz countdown.

  • It must return -1 if start is equal to 0 or negative.

Expected function

func CollatzCountdown(start int) int {

}

Usage

Here is a possible program to test your function :

package main

import (
	"fmt"
	piscine ".."
)

func main() {
	steps := piscine.CollatzCountdown(12)
	fmt.Println(steps)
}

And its output :

student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./test
10
student@ubuntu:~/[[ROOT]]/test$