Because I wanted

A surprisingly simple idea that has numerous applications in varity of problems.

Consuming a REST API

Here are some practical ideas and tricks

Some codes snippets that can come handy in coding problems

This is a YouTube video from The Serious CTO

A whole lot of theoretical topics

Find the minimum number of refueling stops to reach the target position

I compile LeetCode patterns here.

Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center).