Background The URL is arguably one of the best features of the web. The ability for one user to…

2-pointers use 2 pointers (variables) to keep track of the index of array or string. there are…

DFS - Depth First Search an algorithm to search/ traversing the graph data structure recursive…

Dijkstra Problem: given a weighted graph of non-negative weight, and a source node s, find shortest…

User flow If you want users to get from A to B, you have to design how they get there. And you…