If you've started learning DSA, you've probably run into the term STL more times than you can count. It sounds intimidating at first, but once it clicks, it becomes one of the most powerful tools in your C++ arsenal.
What is STL?
STL (Standard Template Library) is a collection of pre-built classes and functions that let you solve problems faster, without reinventing the wheel every time.
Think of it like a toolbox: instead of building a hammer from scratch every time you need one, you just reach in and grab it.
The Three Pillars of STL
