finding a duplicate in a list of strings.. python?

Question

suppose list1 = ['oranges','apple','oranges','oranges','apple']
suppose list2 = ['oranges','apple','oranges','oranges']

I want to return orange and apple for list1
and for list2 ... orange

how can i do this with no loops in python? just if statements and using recursion that way

Answer 1

There are many different ways to do this. Check out this link for at least 5 different solutions depending upon exactly what you're trying to do.



Edit: Yes, I know. What you need to do is almost exactly the same as removing duplicates. Except, instead of removing the duplicates, you accumulate the duplicates in a list and return that list.



Because of your requirements (no loops, just ifs) I'm going on the assumption that this is homework. You don't generally want to use recursion in Python as Python is not a tail-call optimized language and function calls are quite expensive.



If you look at those solutions (admittedly for a different problem) you will be able to see the solution for your problem. I can't, in good conscience, do your homework for you.

Answer 2

Python Find Duplicates In List

Answer 3

hi i could such as you to apply python dictionary. In dictionary you could save Key:value pair. This you ought to use to envision for reproduction via jst traversing the string only as quickly as.