Data Structures and Algorithms The Complete Masterclass - Two Sum

The video tutorial covers the 2 Sum problem, a common interview question. It begins with an introduction to the problem and its constraints, followed by an example with a target of 9. The instructor explains a brute force approach using two loops, which has a complexity of O(n^2). Then, an optimized solution is presented using a dictionary to achieve O(n) complexity. The tutorial concludes with coding the solution and testing its efficiency.

How do you handle the case where the same element cannot be used twice?

What example was used to illustrate the 2 sum problem?

What is the final output of the 2 sum problem based on the example provided?

Summarize the key differences between the two approaches discussed.