Top "Set" questions

How do I add two sets?

a = {'a', 'b', 'c'} b = {'d', 'e', 'f'} I want to add above two set values. I need output like …

python set

pyspark collect_set or collect_list with groupby

How can I use collect_set or collect_list on a dataframe after groupby. for example: df.groupby('key').collect_…

list group-by set pyspark collect

Time complexity of python set operations?

What is the the time complexity of each of python's set operations in Big O notation? I am using Python's …

python data-structures set complexity-theory big-o

random.choice from set? python

I'm working on an AI portion of a guessing game. I want the AI to select a random letter from …

python list set

add vs update in set operations in python

What is the difference between add and update operations in python if i just want to add a single value …

python set

Obtaining a powerset of a set in Java

The powerset of {1, 2, 3} is: {{}, {2}, {3}, {2, 3}, {1, 2}, {1, 3}, {1, 2, 3}, {1}} Let's say I have a Set in Java: Set<Integer> mySet = new HashSet<…

java algorithm set powerset

Is it possible to use getters/setters in interface definition?

At the moment, TypeScript does not allow use get/set methods(accessors) in interfaces. For example: interface I { get name():…

interface get set accessor typescript

how to use cookie-free domains (yslow)

I was trying to solve the problem with cookie-free, the yslow has suggested to create a subdomain. I did, but …

set subdomain yslow

Python remove set from set

According to my interpretation of Python 2.7.2 documentation for Built-In Types 5.7 Set Types, it should be possible to remove the elements …

python set

Cannot instantiate the type Set

I am trying to create a Set of Strings which is filled with the keys from a Hashtable so a …

java set hashtable