bubble sort algorithm in python

1def bubbleSort(lis):
2    length = len(lis)
3    for i in range(length):
4        for j in range(length - i):
5            a = lis[j]
6            if a != lis[-1]:
7                b = lis[j + 1]
8                if a > b:
9                    lis[j] = b
10                    lis[j + 1] = a
11    return lis

1def bubble_sort(arr):
2    x=-1
3    n=len(arr)#length of array 6
4    for i in range (0,n):
5        for j in range(1,n-i):
6            if arr[j-1]>arr[j]:
7                arr[j-1],arr[j]=arr[j],arr[j-1]
8        if (n-i)<=1:
9            break
10    return arr
11            
12if "__main__"==__name__:
13    arr=[7,1,2,6,9,3,8,4]
14    result=bubble_sort(arr)
15    print(result)
16                

1def bubbleSort(arr): 
2    n = len(arr) 
3  
4    # Traverse through all array elements 
5    for i in range(n-1): 
6    # range(n) also work but outer loop will repeat one time more than needed. 
7  
8        # Last i elements are already in place 
9        for j in range(0, n-i-1): 
10  
11            # traverse the array from 0 to n-i-1 
12            # Swap if the element found is greater 
13            # than the next element 
14            if arr[j] > arr[j+1] : 
15                arr[j], arr[j+1] = arr[j+1], arr[j] 
16  
17# Driver code to test above 
18arr = [64, 34, 25, 12, 22, 11, 90] 
19  
20bubbleSort(arr)

1def bubble_sort(arr):
2    def swap(i, j):
3        arr[i], arr[j] = arr[j], arr[i]
4
5    n = len(arr)
6    swapped = True
7    
8    x = -1
9    while swapped:
10        swapped = False
11        x = x + 1
12        for i in range(1, n-x):
13            if arr[i - 1] > arr[i]:
14                swap(i - 1, i)
15                swapped = True
16                    
17    return arr

1def bubble(st):
2    for i in range(len(st),1,-1):
3        for j in range(0,i-1):
4            if st[j]>st[j+1]:
5                st[j],st[j+1]=st[j+1],st[j]
6            else:
7                pass
8    print(st)
9bubble([64, 34, 25, 12, 22, 11, 90] )

1#!/usr/bin/env python3
2# -*- coding: utf-8 -*-
3"""
4Created on Sun Mar 10 18:05:51 2019
5
6@note: Exchanging sort - Bubble Sort algorithm
7@source: http://interactivepython.org/runestone/static/pythonds/SortSearch/TheBubbleSort.html
8
9"""
10
11def bubbleSort(alist):
12    for passnum in range(len(alist)-1,0,-1):
13        for i in range(passnum):
14            if alist[i]>alist[i+1]:
15                temp = alist[i]
16                alist[i] = alist[i+1]
17                alist[i+1] = temp
18