package main

import (
	"fmt"
	"sort"
)

func main() {
	numbers := []int{33, 4, 55, 4, 12, 1, -3, 46}
	fmt.Printf("numbers type =>  %T\n", numbers)
	fmt.Printf("numbers sort.Intslice type => %T\n", sort.IntSlice(numbers))

	//The most basic sort way
	//sort.Ints(numbers) // also sort.Strings ..etc. Look at documentation
	//fmt.Println(numbers)

	//we can also make sort via closure
	sort.Slice(numbers, func(i, j int) bool {
		return numbers[i] < numbers[j]
	})
	fmt.Println("Sort via closure. Numbers:",numbers)

	//Sort and Reverse expects Interface type. IntSlice is an Interface cause it implements Len,Less,Swap methods
	t := sort.IntSlice(numbers)
	fmt.Printf("t type => %T\n", t)

	fmt.Println("Before sort. Numbers =>", numbers)
	sort.Sort(t)
	fmt.Println("After sort. Numbers =>", numbers)

	fmt.Println("Before Reverse sort. Numbers =>", numbers)
	sort.Sort(sort.Reverse(t))
	fmt.Println("After Reverse sort. Numbers =>", numbers)
}