GeezerVison

Go’s slices package implements sorting for builtins and user-defined types. We’ll look at sorting for builtins first.

package main

import (
    "fmt"
    "slices"
)

func main() {

Sorting functions are generic, and work for any ordered built-in type. For a list of ordered types, see cmp.Ordered.

    strs := []string{"c", "a", "b"}
    slices.Sort(strs)
    fmt.Println("Strings:", strs)

An example of sorting ints.

    ints := []int{7, 2, 4}
    slices.Sort(ints)
    fmt.Println("Ints:   ", ints)

We can also use the slices package to check if a slice is already in sorted order.

    s := slices.IsSorted(ints)
    fmt.Println("Sorted: ", s)
}

$ go run sorting.go
Strings: [a b c]
Ints:    [2 4 7]
Sorted:  true