你可以這樣做不同類型的排序技術。這種技術稱爲Bubble Sort
和複雜度爲O(n^2)
def bubbleSort(a):
update=True
while(update):
update = False
for i in range(len(a)-1):
if a[i]>a[i+1]:
a[i],a[i+1]=a[i+1],a[i]
update = True
return a
您還可以通過快速排序的技術使用複雜O(nlogn)
。詳細說明在這裏Quick Sort
def quickSort(alist):
quickSortHelper(alist,0,len(alist)-1)
def quickSortHelper(alist,first,last):
if first<last:
splitpoint = partition(alist,first,last)
quickSortHelper(alist,first,splitpoint-1)
quickSortHelper(alist,splitpoint+1,last)
def partition(alist,first,last):
pivotvalue = alist[first]
leftmark = first+1
rightmark = last
done = False
while not done:
while leftmark <= rightmark and \
alist[leftmark] <= pivotvalue:
leftmark = leftmark + 1
while alist[rightmark] >= pivotvalue and \
rightmark >= leftmark:
rightmark = rightmark -1
if rightmark < leftmark:
done = True
else:
temp = alist[leftmark]
alist[leftmark] = alist[rightmark]
alist[rightmark] = temp
temp = alist[first]
alist[first] = alist[rightmark]
alist[rightmark] = temp
return rightmark
alist = [54,26,93,17,77,31,44,55,20]
quickSort(alist)
print(alist)
那麼你的代碼有什麼問題? – Kasramvd
你爲什麼要「不使用sort」排序?要理解它背後的算法,以避免錯誤的功能? – Jiby
@Jiby - 這通常是面試風格的問題......在這種情況下不太確定。但你有一個非常有效的問題在您的評論... – Lix