排序

2018-07-10  本文已影响0人  reeuq

快排

#quick sort
def quickSort(L, low, high):
    i = low 
    j = high
    if i >= j:
        return L
    key = L[i]
    while i < j:
        while i < j and L[j] >= key:
            j = j-1                                                             
        L[i] = L[j]
        while i < j and L[i] <= key:    
            i = i+1 
        L[j] = L[i]
    L[i] = key 
    quickSort(L, low, i-1)
    quickSort(L, j+1, high)
    return L
def quick_sort(data, start, end):
    if start >= end:
        return
    mid = data[start]
    small = start
    for i in range(start+1, end+1):
        if data[i] > mid:
            small += 1
            if small != i:
                temp = data[small]
                data[small] = data[i]
                data[i] = temp
    data[start] = data[small]
    data[small] = mid
    quick_sort(data, start, small - 1)
    quick_sort(data, small + 1, end)

冒泡

def bubble_sort(nums):
    for i in range(len(nums) - 1):  # 这个循环负责设置冒泡排序进行的次数
        for j in range(len(nums) - i - 1):  # j为列表下标
            if nums[j] > nums[j + 1]:
                nums[j], nums[j + 1] = nums[j + 1], nums[j]
    return nums

print(bubble_sort([45, 32, 8, 33, 12, 22, 19, 97]))
# 输出:[8, 12, 19, 22, 32, 33, 45, 97]
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