public/subjects/slice.en.md

slice

WARNING! VERY IMPORTANT!

For this exercise a function will be tested with the exam own main. However the student still needs to submit a structured program:

This means that:

• The package needs to be named package main.
• The submitted code needs one declared function main(func main()) even if empty.
• The function main declared needs to also pass the Restrictions Checker(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
• Every other rules are obviously the same than for a program.

Instructions

Write a program that replicates the javascript functions slice.

The program receives an array of strings and one or more integers, and returns an array of strings. The returned array is part of the received one but cut from the position indicated in the first int, until the position indicated by the second int.

In case there only exists one int, the resulting array begins in the position indicated by the int and ends at the end of the received array.

The ints can be lower than 0.

Expected function

func Slice(arr []string, nbrs... int) []string{

}

Usage

Here is a possible program to test your function :

package main

import "fmt"

func main(){
    arr := []string{"coding", "algorithm", "ascii", "package", "golang"}
    fmt.Println(arr, 1)
    fmt.Println(arr, 2, 4)
    fmt.Println(arr, -3)
    fmt.Println(arr, -2, -1)
    fmt.Println(arr, 2, 0)
}

student@ubuntu:~/student/test$ go build
student@ubuntu:~/student/test$ ./test
[algorithm ascii package golang]
[ascii package]
[algorithm ascii package golang]
[package]
[]