Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
you can declare a list or anything with a empty item.
Like,
result = [],
num = 0 ,
dict = {} ,
str = ''
If there are no good ideas ("as is often the case") then it traverses array only once.
This always traverses array two full times.