Python中的交集更新()在n个数组中查找公共元素
在本文中，我们将学习Python中的iintersection_update()来找出n个数组中的公共元素。
问题是给我们一个包含列表的数组，找到给定数组中的所有公共元素？
算法
1.Initializingres with the first list inside the array 2.Iterating through the array containing lists 3.Updating the res list by applying intersection_update() function to check the common elements. 4.Finally returning the list and display the output by the help of the print statement.
现在让我们看一下它的实现
示例
def commonEle(arr):
# initialize res with set(arr[0])
res = set(arr[0])
# new value will get updated each time function is executed
for curr in arr[1:]: # slicing
res.intersection_update(curr)
return list(res)
# Driver code
if __name__ == "__main__":
nest_list=[['t','u','o','r','i','a','l'], ['p','o','i','n','t'], ['t','u','o','r','i','a','l'], ['p','y','t','h','o','n']]
out = commonEle(nest_list)
if len(out) > 0:
print (out)
else:
print ('No Common Elements')输出结果
['o', 't']
结论
在本文中，我们学习了Python中的iintersection_update()来查找n个数组中的公共元素及其实现。