Learn Data Structure is a free Android app developed by Engineering Hub for engineering students studying BE, B-Tech, M-Tech, MCA, BCA, and MS. This app provides a comprehensive and easy-to-understand approach to learning data structures. It covers all the essential topics, including basic terminology, elementary data organization, structure operations, algorithms, complexity, and time-space trade-offs.

The app covers a wide range of topics, including arrays, stacks, queues, linked lists, trees, searching and hashing, sorting, binary search trees, graphs, and file structures. It provides a detailed explanation of each topic, along with examples and practice questions. The app also includes a feature that allows users to convert infix to prefix and postfix expressions, evaluate postfix expressions using stacks, and apply recursion in problems like the Tower of Hanoi.

Overall, the Learn Data Structure app is an excellent resource for engineering students who want to learn data structures in an easy and comprehensive way. It is user-friendly, well-structured, and provides a wealth of information that is relevant to the subject matter.