Questions on closures
Some common interview questions with topics such as decimal numbers, scope, private variables, and more.
Map, reduce, and filter - functional programming
Question and solution for sorting an array of 0's, 1's, and 2's in place and in linear time.
Find duplicates in an array using a hash table
A common interview question where your goal is to find all duplicates in an array in linear time.
Two sum problem
A popular interview question that requires you to determine if two numbers in an array sum to a specific value. A solution can be written that runs in linear time.
Arrays and Lists
Improve your algorithms knowledge with this course on sorting, linked lists, hash tables, queues, and more.