public/subjects/unmatch.md

join

Instructions

Write a function, Unmatch, that returns the element of the slice (arr) that does not have a correspondent pair.

The function must have the next signature.

Expected function

func Unmatch(arr []int) int {

}

Usage

Here is a possible program to test your function :

package main

import (
       "fmt"
       student ".."
)

func main() {
	arr := []int{1, 2, 3, 1, 2, 3, 4}
	unmatch := student.Unmatch(arr)
	fmt.Println(unmatch)
}

And its output :

student@ubuntu:~/student/unmatch$ go build
student@ubuntu:~/student/unmatch$ ./unmatch
4
student@ubuntu:~/student/unmatch$