Question

infile = open("array.txt", "r")
array = infile.readlines()
for i in range(len(array)):
    array[i] = str(array[i])
    array[i] = array[i].rstrip('\n')

#insertion sort
i = 0
while i <= (len(array) - 2):
    if array[i] > array[i+1]:
        temp = array[i+1]
        j = i
        while j >= 0 and array[j] > temp:
            array[j+1] = array[j]
            j = j - 1
        array[j+1] = temp
    i = i+1
print(array)

有些数字正确排序......有些数字不是：

original list: ['1534', '78675', '2345', '7861', '345', '8761', '1', '27456']

['1534', '2345', '78675', '7861', '345', '8761', '1', '27456']
['1534', '2345', '7861', '78675', '345', '8761', '1', '27456']
['1534', '2345', '345', '7861', '78675', '8761', '1', '27456']
['1', '1534', '2345', '345', '7861', '78675', '8761', '27456']
['1', '1534', '2345', '27456', '345', '7861', '78675', '8761']
['1', '1534', '2345', '27456', '345', '7861', '78675', '8761']

前2次传球正常，但在第3次传球中，'345'未正确排序。任何人都可以帮助我吗？

编辑：如果我没有从文本文件中读取数组，而只是定义了数组，则排序有效。为什么会这样？

Answer 1

这可能是因为"345" > "2345"为True，因为字符串“345”在“2345”之后按字典顺序出现。如果您想要数字排序，请尝试使用数字而不是字符串填充原始列表。

array = [1534, 78675, 2345, 7861, 345, 8761, 1, 27456]
i = 0
while i <= (len(array) - 2):
    #etc

结果：

[1, 345, 1534, 2345, 7861, 8761, 27456, 78675]

Python中的插入排序代码未正确排序

1 个答案: