golang-counting-sort

package main

import (
    "fmt"
)

func main() {
    var arr = []int{6, 5, 3, 1, 8, 7, 2, 4, 9, 0, 3}
    fmt.Println(arr)
    CountingSort(arr)
}

func CountingSort(arr []int) {
    ln := len(arr)
    var sortAry = make([]int, ln, ln)
    var countAry = make([]int, ln, ln)

    for _, n := range arr {
        countAry[n]++
    }

    fmt.Println("count arr :", countAry)
    for i := 1; i < ln; i++ {
        countAry[i] += countAry[i-1]
    }
    fmt.Println("count arr add:", countAry)

    for _, kv := range arr {
        countAry[kv]--
        sortAry[countAry[kv]] = kv
    }

    fmt.Println(sortAry)
}

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