python用列表实现插入排序算法，用index

def insert_sort(lst):
for i in range(1, len(lst)):
j = i - 1
temp = lst[i]
while j >= 0 and lst[j] > temp:
lst[j+1] = lst[j]
j -= 1
lst[j+1] = temp
return lst

# 测试
lst = [3, 5, 1, 8, 2, 9, 4, 7, 6]
print(insert_sort(lst)) # [1, 2, 3, 4, 5, 6, 7, 8, 9]

相关问题

python折半插入排序，简单选择排序，快速排序算法代码实现

折半插入排序：

def binary_insertion_sort(arr):
    for i in range(1, len(arr)):
        key = arr[i]
        left, right = 0, i - 1
        while left <= right:
            mid = (left + right) // 2
            if key < arr[mid]:
                right = mid - 1
            else:
                left = mid + 1
        for j in range(i - 1, left - 1, -1):
            arr[j + 1] = arr[j]
        arr[left] = key
    return arr

简单选择排序：

def selection_sort(arr):
    for i in range(len(arr)):
        min_index = i
        for j in range(i + 1, len(arr)):
            if arr[j] < arr[min_index]:
                min_index = j
        arr[i], arr[min_index] = arr[min_index], arr[i]
    return arr

快速排序：

def quick_sort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[0]
    left = [x for x in arr[1:] if x < pivot]
    right = [x for x in arr[1:] if x >= pivot]
    return quick_sort(left) + [pivot] + quick_sort(right)

这里分别实现了折半插入排序、简单选择排序、快速排序的代码。

用python实现排序算法

以下是Python实现的几种常见排序算法：

1. 冒泡排序

def bubble_sort(arr):
    n = len(arr)
    for i in range(n):
        for j in range(n-i-1):
            if arr[j] > arr[j+1]:
                arr[j], arr[j+1] = arr[j+1], arr[j]
    return arr

2. 选择排序

def selection_sort(arr):
    n = len(arr)
    for i in range(n-1):
        min_index = i
        for j in range(i+1, n):
            if arr[j] < arr[min_index]:
                min_index = j
        arr[i], arr[min_index] = arr[min_index], arr[i]
    return arr

3. 插入排序

def insertion_sort(arr):
    n = len(arr)
    for i in range(1, n):
        j = i
        while j > 0 and arr[j] < arr[j-1]:
            arr[j], arr[j-1] = arr[j-1], arr[j]
            j -= 1
    return arr

4. 快速排序

def quick_sort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr)//2]
    left = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right = [x for x in arr if x > pivot]
    return quick_sort(left) + middle + quick_sort(right)

5. 归并排序

def merge_sort(arr):
    if len(arr) <= 1:
        return arr
    mid = len(arr) // 2
    left = merge_sort(arr[:mid])
    right = merge_sort(arr[mid:])
    return merge(left, right)
    
def merge(left, right):
    result = []
    i = j = 0
    while i < len(left) and j < len(right):
        if left[i] <= right[j]:
            result.append(left[i])
            i += 1
        else:
            result.append(right[j])
            j += 1
    result += left[i:]
    result += right[j:]
    return result

以上是常见的几种排序算法的Python实现。