If you skip Leet Code Hard questions because they are labelled “hard”, you should watch this video to see how they are, in fact, simple to solve!

Tricky topo sort? No more! Quick video and implementation intuition inside.

Step-by-step : input requirements, output, time & space complexities - the works!

Worried that recursion on trees sounds tricky? Here are the 2 models that will help you solve literally any algorithmic question on Trees (Along with python code!)

The newbie’s guide to one of the most fundamental topics in Data Science.

Scared of heaps? No more! Here is a step-by-step explanation of the structure and the most common operations that can be performed on them!