4. Algorithms - Bogo Sort

Bogo sort is a randomizing algorithm that shuffles an array and then checks whether it is sorted.

package main

import (
    "fmt"
    "math/rand"
    "time"
)

// isSorted checks whether a list is sorted by comparing first and next value.
func isSorted(list []int) bool {
    for i, _ := range list {
        if i != (len(list) - 1) {
            if list[i] > list[i+1] {
                return false
            }
        }

    }

    return true

}

// bogoSort shuffles a list.
func bogoSort(list *[]int) {
    rand.Shuffle(len(*list), func(i, j int) {
        (*list)[i], (*list)[j] = (*list)[j], (*list)[i]
    })
}

func main() {
    rand.Seed(time.Now().UnixNano())
    x := []int{4, 1, 7, 5, 8}
    tries := 0

    for {
        tries++
        fmt.Println(tries)
        bogoSort(&x)
        fmt.Println(x)
        if isSorted(x) {
            break
        }

    }

    fmt.Println(x)
}


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