Menu
I have a list of integer arrays. I need to find the common elements between those. What I can think of is an extension of what is listed in Common elements in two lists
Example would be
[1,3,5],
[1,6,7,9,3],
[1,3,10,11]
should result in [1,3]
There are no duplicates in the arrays as well.
Is there a straight forward way to do this?
980
We can also apply the reduce function in python. This function is used to apply a given function passed onto it as argument to all of the list elements mentioned in the sequence passed along. The lambda function finds out the common elements by iterating through each nested list after set is applied to them .
Using & Operator The set's & operator is also one way of finding common elements in two lists. In this method, both the lists are converted into sets first and then the common elements are found using & . First both the lists are converted into set using set() function.
pick 2 item from list1 to search, search in list2 up to , either the list exhausts or matching element is found , if element is found search in list3 other wise pick the 3 item from list1 i.e 5 to search. Save this answer.
You can transform the lists to sets, and then use Set.retainAll method for intersection between the different sets.
Once you intersect all sets, you are left with the common elements, and you can transform the resulting set back to a list.
97
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
