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。