Go排序算法通用qsort函数使用示例

package main
import "fmt"
func quickSort(arr []int) {
  if len(arr) <= 1 {
    return
  }
  pivotIndex := partition(arr)
  quickSort(arr[:pivotIndex])
  quickSort(arr[pivotIndex+1:])
}
func partition(arr []int) int {
  pivot := arr[0]
  left, right := 1, len(arr)-1
  for left <= right {
    for left <= right && arr[left] < pivot {
      left++
    }
    for left <= right && arr[right] > pivot {
      right--
    }
    if left <= right {
      arr[left], arr[right] = arr[right], arr[left]
      left++
      right--
    }
  }
  arr[0], arr[right] = arr[right], arr[0]
  return right
}
func main() {
  arr := []int{3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5}
  quickSort(arr)
  fmt.Println("Sorted array:", arr)
}

package main
import (
  "fmt"
  "reflect"
)
func QuickSort(slice interface{}) {
  value := reflect.ValueOf(slice)
  if value.Kind() != reflect.Slice {
    panic("Input is not a slice")
  }
  quickSortGeneric(slice, 0, value.Len()-1)
}
func quickSortGeneric(slice interface{}, low, high int) {
  value := reflect.ValueOf(slice)
  if low < high {
    pivotIndex := partitionGeneric(slice, low, high)
    quickSortGeneric(slice, low, pivotIndex-1)
    quickSortGeneric(slice, pivotIndex+1, high)
  }
}
func partitionGeneric(slice interface{}, low, high int) int {
  value := reflect.ValueOf(slice)
  pivot := value.Index(low).Interface()
  left, right := low+1, high
  for left <= right {
    for left <= right && reflect.ValueOf(slice).Index(left).Interface() < pivot {
      left++
    }
    for left <= right && reflect.ValueOf(slice).Index(right).Interface() > pivot {
      right--
    }
    if left <= right {
      swap(slice, left, right)
      left++
      right--
    }
  }
  swap(slice, low, right)
  return right
}
func swap(slice interface{}, i, j int) {
  value := reflect.ValueOf(slice)
  tmp := value.Index(i).Interface()
  value.Index(i).Set(value.Index(j))
  value.Index(j).Set(reflect.ValueOf(tmp))
}
func main() {
  arr := []int{3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5}
  QuickSort(arr)
  fmt.Println("Sorted array:", arr)
  strArr := []string{"banana", "apple", "orange", "grape"}
  QuickSort(strArr)
  fmt.Println("Sorted strings:", strArr)
}