public/subjects/fromto/README.md

fromto

Instructions

• Write a function that takes two integers and returns a string representing the range of numbers from the first to the second.

• The function can return the numbers in any order.

• The number must be separated by a comma and a space.

• If any of the arguments is bigger than 99 or less than 0, the function returns "invalid" followed by a newline ('\n').

• Add 0 at the first of any number if it is less than 10.

• Add a new line ('\n') at the end of the string.

Expected function

func FromTo(from int, to int) string {

}

Usage

Here is a possible program to test your function :

package main

import (
	"fmt"
)

func main() {
	fmt.Println(FromTo(1, 10))
    fmt.Println(FromTo(10, 1))
    fmt.Println(FromTo(10, 10))
    fmt.Println(FromTo(100, 10))
}

And its output :

$ go run . | cat -e
01, 02, 03, 04, 05, 06, 07, 08, 09, 10$
10, 09, 08, 07, 06, 05, 04, 03, 02, 01$
10$
invalid$