Given a parentheses expression, check if the pairs and orders of “(“, “)”, “{“, “}”, “[“, “]” are correct in the expression.

In this article we talk about how to merge two sorted linked lists and get a new sorted merged linked list.

In this article we discuss the problem of finding the last Kth element of a linked list. We talk about two approaches to solve this problem.

In this article we discuss about how can we print the contents of a matrix in spiral form?

In this article we discuss a step wise approach on how to reverse a linked list. We also look at its implementation in Java.

In this article we discuss whether competitive programming is needed to be a good software engineer and how can you use it in your career?