DSA prep resources trending
- Social posts highlighted free DSA study resources used by candidates for big-tech placements. - Raj Vikramaraj's TakeUForward sheet and the 'LeetCode Patterns' repo (11.4K stars) were called out specifically. - The conversation favors pattern-based study over random problem grinding for FAANG interview prep. ( )
Posts on X this month pushed two free coding-interview study guides back into view: TakeUForward’s A2Z sheet and Sean Prashad’s LeetCode Patterns list. (takeuforward.org, github.com) TakeUForward’s page says its A2Z data structures and algorithms course was last updated on December 13, 2025 and now tracks 451 problems across arrays, graphs, dynamic programming, binary trees, tries and other topics. (takeuforward.org) Sean Prashad’s GitHub repository had 12.2K stars when checked on April 19, 2026, and its README says the questions are grouped by subtopic “rather than randomly tackling questions.” (github.com) Data structures and algorithms, usually shortened to DSA, are the coding rounds many software candidates face before system design or behavioral interviews. TakeUForward’s home page lists multiple free “DSA Sheets,” including A2Z, Blind 75 and SDE Sheet, all built around ordered problem sets instead of a blank practice queue. (takeuforward.org) Pattern-based prep means learning reusable problem types — like sliding window, two pointers, binary search or breadth-first search — and then solving several variations in a row. Sean Prashad’s repo says that repetition is the point: apply common patterns repeatedly, not one-off tricks. (github.com) That approach lines up with how TakeUForward organizes its own sheet. The A2Z page breaks practice into named blocks such as “Binary Search [1D, 2D Arrays, Search Space],” “Sliding Window & Two Pointer Combined Problems,” and “Dynamic Programming [Patterns and Problems].” (takeuforward.org) The two resources are not identical. TakeUForward is a full roadmap with progress tracking and topic order, while the LeetCode Patterns repo is a lighter index that points candidates to grouped problems and a companion website. (takeuforward.org, github.com) The X posts that revived the discussion could not be independently fetched in search results during reporting, but the resources they named are live and free to access. The practical advice circulating around them is consistent with the source material itself: study by pattern, then scale difficulty. (takeuforward.org, github.com)
