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README.md |
README.md
unmatch
Instructions
Write a function, Unmatch
, that returns the element of the slice that does not have a correspondent pair.
- If all the number have a correspondent pair, it should return
-1
.
Expected function
func Unmatch(a []int) int {
}
Usage
Here is a possible program to test your function :
package main
import (
"fmt"
"piscine"
)
func main() {
a := []int{1, 2, 3, 1, 2, 3, 4}
unmatch := piscine.Unmatch(a)
fmt.Println(unmatch)
}
And its output :
$ go run .
4
$