Golang : Sort and reverse sort a slice of integers

Problem :

How to sort and reverse sort a slice of integers ?

Solution :

Use sort.Ints and sort.Sort functions.

 package main

 import (
 "fmt"
 "sort"
 )

 var intSlice = []int{4, 3, 2, 1, 0}

 func main() {

 fmt.Println("Original : ", intSlice[:])

 sort.Ints(intSlice)
 fmt.Println("Sort : ", intSlice)

 sort.Sort(sort.Reverse(sort.IntSlice(intSlice)))

 fmt.Println("Reverse Sort : ", intSlice)

 }

Output :

Original : [4 3 2 1 0]

Sort : [0 1 2 3 4]

Reverse Sort : [4 3 2 1 0]

NOTE : There is a 3rd party package that can be used for sorting as well. See http://godoc.org/github.com/cznic/sortutil and https://www.socketloop.com/tutorials/golang-sort-and-reverse-sort-a-slice-of-bytes on how to use the sortutil package