DSA patterns and interview questions, SQL queries, aptitude formulas, reasoning practice, HR interview answers and a placement roadmap for campus and off-campus hiring.
Reusable Python templates for strings, stacks, linked lists, trees, graphs, heaps, backtracking and dynamic programming. For each: when to use it, the template, its complexity, the classic bug, and LeetCode problems to practise.
Free PDFPDFIntermediate
40 multiple-choice reasoning questions in the style of placement aptitude tests: series, coding-decoding, blood relations, directions, ranking, clocks, calendars, syllogisms, seating and puzzles. Every answer was checked by code or by working it through twice.
Free PDFPDFBeginner
31 SQL questions that come up in placement tests and technical interviews, from filters and joins to window functions and deleting duplicates. Every query was run against the sample data shown, and its real output is printed below it.
Free PDFPDFAll levels
A 46-page playbook for engineering freshers: a 30-day AI skills track, three portfolio projects recruiters open, an off-campus job-search system with message templates, and the interview minimum for DSA, CS fundamentals, AI and HR.
Premium packPDFBeginner
Every formula from our quantitative aptitude guide on a printable PDF: percentages, interest, ratios, time and work, speed and distance, permutations and probability.
Free PDFPDFBeginner
The HR questions freshers commonly face in campus and off-campus interviews, grouped by theme. For each one: what the interviewer is checking, a simple structure for your answer, and a short sample answer to adapt to your own experience.
GuideWebBeginner
A 90-day plan for campus placements in seven stages: DSA foundations, core patterns, CS fundamentals, aptitude, projects and resume, mock interviews and final revision. Each stage says what to do and how to tell when you are ready to move on.
RoadmapWebAll levels
A formula sheet for the quantitative section of placement aptitude tests, from percentages and interest to time and work, speed, permutations, probability and number system, with a worked example for each topic.
GuideWebBeginner
30 array questions that come up again and again in placement coding rounds, grouped into five patterns: two pointers, sliding window, prefix sums, hashing, and intervals and sorting. Each has a LeetCode link, the approach, a Python sketch and its complexity.
Practice sheetWebAll levels