Exercise: Create a unique list of values

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Given a list of strings, create a list of unique values sorted by abc.

examples/unique-values-skeleton/unique_values_skeleton.go

package main

import "fmt"

func main() {
    // input
    fruits := []string{"grape", "banana", "mango", "nut", "orange", "peach", "apple", "nut", "banana", "apple", "mango"}
    fmt.Println(fruits)

    // expected output:
    uniqueFruites := []string{"apple", "banana", "grape", "mango", "nut", "orange", "peach"}
    fmt.Println(uniqueFruites)
}