I should've used ans.append() instead of ans=+; My 3.0+ compiler is really confusing （╯－＿－）╯╧╧
Works fine on my PC. But the web console wouldn't let me pass...
'''Oops, try again. remove_duplicates() resulted in an error: list index out of range'''
I'd really appreciate it if someone could point my mistake. Thanks!
My code is as follows:
for i in range(len(lst)):
if l for j in range(l):