python 归并排序

python

def merge_sort(array):

def merge_arr(arr_l, arr_r):

array = []

while len(arr_l) and len(arr_r):

if arr_l[0] <= arr_r[0]:

array.append(arr_l.pop(0))

elif arr_l[0] > arr_r[0]:

array.append(arr_r.pop(0))

if len(arr_l) != 0:

array += arr_l

elif len(arr_r) != 0:

array += arr_r

return array

def recursive(array):

if len(array) == 1:

return array

mid = len(array) // 2

arr_l = recursive(array[:mid])

arr_r = recursive(array[mid:])

return merge_arr(arr_l, arr_r)

return recursive(array)

hlist = merge_sort([4,5,6,7,3,2,6,9,8])

print(hlist)

  

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