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bubble_sort.py
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54 lines (47 loc) · 1.28 KB
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# coding=utf-8
from typing import List
class BubbleSort(object):
def sort(self, arr: List[int]):
"""
Time: O(n^2), Space: O(1)
:param arr:
:return:
"""
if not arr:
return
for i in range(len(arr) - 1, 0, -1):
for j in range(i):
if arr[j] > arr[j + 1]:
arr[j], arr[j + 1] = arr[j + 1], arr[i]
def sort2(self, arr: List[int]):
"""
Time: O(n^2), Space: O(1)
:param arr:
:return:
"""
if not arr:
return
for i in range(len(arr) - 1, 0, -1):
swapped = False
for j in range(i):
if arr[j] > arr[j + 1]:
arr[j], arr[j + 1] = arr[j + 1], arr[j]
swapped = True
if not swapped:
return
def sort3(self, arr: List[int]):
"""
Time: O(n^2), Space: O(1)
:param arr:
:return:
"""
if not arr:
return
i = len(arr) - 1
while i > 0:
new_end = 0
for j in range(i):
if arr[j] > arr[j + 1]:
arr[j], arr[j + 1] = arr[j + 1], arr[j]
new_end = i
i = new_end