You might not have given much thought to them before, but maybe you want to stop buying them this year. Here’s why.

Understanding the HackerEarth setup helps you use the tools and see your progress better. Practicing coding problems, ...

A PriorityQueue is a list that always keeps its items sorted based on some rule, like smallest to largest. So, when you take an item out, you always get the one with the highest (or lowest) priority.