How do I check if a list is empty?

Lashawna

0 1 0 9

asked 07 September, 2021

Finding the index of an item in a list

Given a list ["foo", "bar", "baz"] and an item in the list "bar", how do I get its index (1) in Python?

Chelsea

0 1 0 9

asked 07 September, 2021

Understanding slice notation

I need a good explanation (references are a plus) on Python's slice notation. To me, this notation need

Arline

0 1 0 9

asked 07 September, 2021

How to make a flat list out of a list of lists

Is there a shortcut to make a simple list out of a list of lists in Python? I can do it in a for loop, but is

Karolyn

0 1 0 9

asked 07 September, 2021

Accessing the index in 'for' loops?

How do I access the index in a for loop like the following? ints = [8, 23, 45, 12, 78] for i in ints: pri

Hildegard

0 1 0 9

asked 07 September, 2021

Array versus linked-list

Why would someone want to use a linked-list over an array? Coding a linked-list is, no doubt, a bit more work

Chaya

0 1 0 9

asked 07 September, 2021

Python Sets vs Lists

In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I wou

Trudy

0 1 0 9

asked 07 September, 2021

Skip List vs. Binary Search Tree

I recently came across the data structure known as a skip list. It seems to have very similar behavior to a bi

Jeff

0 1 0 9

asked 07 September, 2021

How to convert List to Map?

Recently I have conversation with a colleague about what would be the optimal way to convert List to Map in Ja

Benton

0 1 0 9

asked 07 September, 2021

In Python, when to use a Dictionary, List or Set?

When should I use a dictionary, list or set? Are there scenarios that are more suited for each data type?

Ali

0 1 0 9

asked 07 September, 2021

How to Correctly Use Lists in R?

Brief background: Many (most?) contemporary programming languages in widespread use have at least a handful of

Keith

0 1 0 9

asked 07 September, 2021

When should I use a List vs a LinkedList

When is it better to use a List vs a LinkedList?

Jesenia

0 1 0 9

asked 07 September, 2021

How to detect a loop in a linked list?

Say you have a linked list structure in Java. It's made up of Nodes: class Node { Node next; //

Shantay

0 1 0 9

asked 07 September, 2021

How do I sort a list of dictionaries by a value of the dictionary?

I have a list of dictionaries and want each item to be sorted by a specific value. Take into consideration the

Nereida

0 1 0 9

asked 07 September, 2021

What is the difference between Python's list methods append and extend?

Scot

0 1 0 9

asked 07 September, 2021

Initialization of an ArrayList in one line

I wanted to create a list of options for testing purposes. At first, I did this: ArrayList<String> plac

Dorian

0 1 0 9

asked 07 September, 2021

When to use LinkedList over ArrayList in Java?

I've always been one to simply use: List<String> names = new ArrayList<>(); I use the inte

Sena

0 1 0 9

asked 07 September, 2021

Create ArrayList from array

I have an array that is initialized like: Element[] array = {new Element(1), new Element(2), new Element(3)};

Margo

0 1 0 9

asked 07 September, 2021