package main

import "fmt"

func swap(arr []int, a, b int) {
    temp := arr[a]
    arr[a] = arr[b]
    arr[b] = temp
}
func bubbleSort(arr []int) {
    for i := 0; i < len(arr); i++ {
        for j := 0; j < (len(arr) - 1 - i); j++ {
            if arr[j] > arr[j + 1] {
                swap(arr, j, j + 1)
            }
        }
    }
}
func main() {
    arr := []int{4,1,5,3,2}
    fmt.Println(arr)
    bubbleSort(arr)
    fmt.Println(arr)
}