How to find duplicate of a number in an array ?

Question

with less time complexity

Answer 1

@Deep Serket thanks, I'm still learning. just tried to help

Answer 2

Convert your array into Set.

myset = set(mylist)

Answer 3

remove duplicates:

mylist = list(set(mylist))

find duplicates:

for elem in mylist:
if mylist.count(elem) > 1:
pass

or if you want to store all duplicates:

uniques = set(mylist)
duplicates = [elem for elem in mylist if elem not in uniques or uniques.remove(elem)]

@LayB "for i in range(len(array))" is a bad idea for a python programmer.

http://docs.python-guide.org/en/latest/writing/style/