I had started the #30DaysofCode📚 challenge while I was revising the basic concepts, data structures, and solving easy problems on LeetCode. I documented this so that it helps both me and others to recall what we have learned.

How to use this list📑

First, look at the given questions

If you are confident with the given concept or feel very familiar, you can skip it

Else, read the description first and try to solve it

Next, read the solution approach this can help with Thinking out of the Box🧠

The code solutions are written in C++. However, after reading the question and solution approach you will be able to understand the program easily and solve it in your preferred language.

All the Best!👍 Let's do this!

If you find this #30DaysofCode list useful, Share it with a friend 💖

C++ Concepts



Single Iteration O(N)


Data Structures

Searching Algorithms


Download PDF

Join Matrixread Community

Receive free programming courses, tips, and lists like these straight to your inbox.

Subscibe to our Newsletter

Leave a Reply

Your email address will not be published. Required fields are marked *

Popular posts