Placement prep + AI for engineers
Evidence-led articles on aptitude, coding, company-specific test patterns, and AI roadmaps for Indian engineering students. 1054 articles published so far. India-context throughout.
L&T Infotech Test Pattern, Eligibility & Syllabus 2026 Guide
L&T Infotech merged into LTIMindtree in 2022. Get the 2026 eligibility criteria, multi-level test pattern, full syllabus, and CTC bands for fresher campus hiring.
Job Interview Preparation: 5 Steps That Move Your Score
Five interview preparation habits every engineering student needs before placement season: sleep, digital presence, punctuality, dress, and authentic answers.
Averages in Aptitude Tests: Mean, Weighted Average, Shortcuts
Solve averages and central tendency problems for campus placement tests. Covers arithmetic mean, deviation method, weighted averages, and eight verified worked examples.
Profit and Loss: Formulas, Shortcuts, and Worked Examples
All the profit and loss formulas, shortcuts, and worked examples for placement aptitude tests, covering CP, SP, profit %, successive discounts, and false weights.
Last Two Digits of Large Numbers: Cycle Method and CRT
Find last two digits of any large power in 20 seconds. Covers the cycle method, CRT shortcut, and 4 verified examples. For TCS NQT and AMCAT prep.
Maximum A's with Four Keys: DP Solution for Placement Rounds
Solve the four-key keyboard problem with a verified DP recurrence, answer table for N=1 to 12, and step-by-step walkthrough for placement coding rounds.
Merge Two Sorted Arrays: C, C++, Java and Python
Three approaches to merge two sorted arrays in C, C++, Java, and Python: two-pointer, concatenate-and-sort, and min-heap, with time and space complexity.
Microsoft Interview Questions for Freshers: Technical and HR
Round-by-round question patterns for Microsoft's fresher technical and HR interviews: DSA topics, CS fundamentals, project deep-dives, and 2026 prep strategy.
Microsoft Placement Papers: Sample Questions and Prep Guide
Real sample problem types from past Microsoft OAs, classified by topic with approach hints, plus a four-week prep plan for the 2-problem format.
LTIMindtree Aptitude Questions 2026: Worked Solutions
Practice LTIMindtree quantitative aptitude with 7 worked questions covering percentages, profit and loss, TSD, time-and-work, ratios, combinations, and probability.
LTIMindtree Aptitude Test Questions: Updated 2026 Guide
LTIMindtree online test: 6 sections, 107 questions, 2 coding problems. Full pattern, sample aptitude questions, and prep strategy for 2025-26 campus placements.
LTIMindtree Placement Papers with Solutions: 2026 Guide
Practice questions from LTIMindtree's online test covering aptitude, logical reasoning, and verbal ability, with solutions and the 2026 hiring pattern.
Mindtree Placement Process: 2026 Test Pattern and Prep Guide
Mindtree (now LTIMindtree) uses a four-round process: AMCAT, coding test, technical, and HR. 2026 pattern, syllabus, and interview prep for freshers.
Minimum Sum Partition: DP Table, Worked Example, and Code
Partition an integer array into two subsets with the smallest sum difference. DP table formulation, step-by-step worked example, and Python code for placement prep.
Python Modules: Create, Import, and Use Them Right
A practical guide to Python modules: what they are, three import styles, built-in modules for placement tests, and the __name__ guard with working code.
Stress Interview Questions: Types, Samples, and Answers
Eight types of stress interview techniques, sample questions with response frameworks, and composure tactics for placement candidates.
Mu Sigma Observational Test: Guide for 2026 Campus Drives
Mu Sigma's observational test presents a short clip or image and asks for a structured essay. Format, skills tested, and 2026 selection process guide.
Multiply Numbers Near Powers of 10: Aptitude Shortcut
Master the base multiplication method for numbers near 10, 100, and 1000. Verified worked examples with correct answers for campus placement aptitude tests.
Nested Loops in Python: Types, Syntax, and Examples
Four types of nested loops in Python with working code and placement-round examples. Covers for, while, mixed variants, and break/continue control.
Opening and Closing Gates Problem: Wipro Coding Walkthrough
The opening and closing gates problem is a Wipro coding round question based on balanced parentheses. Algorithm, worked solution, and test cases all in one place.
Operator Overloading in Python: Magic Methods with Examples
How Python maps +, -, == and other operators to dunder methods like __add__ and __lt__. Covers the full magic-method table plus two worked placement-style examples.
Parallel Structure in Sentence Correction: 5 Error Types
Five parallel-structure error types in placement verbal tests, with one fix rule each. Worked examples for AMCAT, TCS NQT, and Cocubes sentence correction.
Persistent Systems Recruitment Process: 2026 Guide
Four-section online test, technical round, and HR interview at Persistent Systems, complete 2026 syllabus breakdown and prep strategy for freshers.
Persistent Systems Placement Papers 2026: Test Pattern and Solutions
Persistent Systems' 60-question online test covers technical CS and aptitude. Full 2026 test pattern, section syllabus, and verified worked sample questions.
Philips Selection Process 2026: Rounds, Eligibility and Prep
Step-by-step breakdown of Philips's fresher recruitment process: online aptitude test, technical interview, and HR round, with eligibility criteria and prep tips.
A 6-Week Placement Training Plan for Engineering Freshers
Structure your placement training around the TCS NQT pattern, aptitude topics, coding fundamentals, and mock tests to reach campus drive day prepared.
English Prepositions of Time: at, on, in, by, for and since
Master English prepositions of time with clear rules for at, on, in, by, for, since and until. Includes common error corrections and placement test practice questions.
Prepositions in Sentence Correction: Error Types and Fix Rules
Four preposition error types tested in placement aptitude tests, each with worked examples: wrong preposition, missing, redundant, and idiomatic phrases.
Python Program to Print Prime Numbers in a Range
Step-by-step Python programs to print prime numbers in a range. Covers trial division, Python's for/else idiom, and the Sieve of Eratosthenes.
Armstrong Numbers in a Range: C, C++, Java, Python
Programs to print Armstrong numbers between two intervals in C, C++, Java, Python. Traced algorithm, integer-power fix, and time complexity.
Print an Array in Zigzag Order in Python
Step-by-step guide to rearranging a Python list in zigzag order. Covers the O(n) swap algorithm, traced examples, edge cases, and CRT placement patterns.
Printing Variables in Python: Single, Multiple, Formatted
Four Python 3 methods to print variables with text: commas, % operator, .format(), and f-strings. Includes working code, common error fixes, and a comparison table.
Program to Add Two Matrices in C, Java, and Python
How to add two matrices in C, Java, and Python: algorithm, worked example, O(m×n) time and space complexity, and common placement coding test mistakes.
Check if Two Arrays Are Equal: 3 Approaches Explained
Three approaches to check if two arrays are equal: sort-and-compare, frequency count, and direct match, with working code and complexity analysis.
Abundant Number Program: C, Java and Python with √n Check
An abundant number has a proper-divisor sum greater than itself. Code in C, Java, and Python using the O(√n) loop, with worked examples for 12, 18, and 20.
Count Edges in an Undirected Graph: Algorithm and Code
Learn how to count edges in an undirected graph using the Handshaking Lemma. Step-by-step algorithm, Python and C++ code, and complexity analysis included.
Count Even and Odd Elements in an Array
Single-pass O(n) algorithm to count even and odd elements in an array. Working code in C, C++, Python, and Java, with complexity analysis and edge cases.
Count Vowels, Consonants, Digits and Special Characters in a String
Programs in Python, C, and Java to count vowels, consonants, digits, and special characters in a string. Algorithm, code, and traced outputs included.
Find All 0(1+)0 Patterns in a String: C & Python Guide
Count every 0(1+)0 occurrence in a binary string using a linear scan. C and Python code included, plus edge cases and O(n) complexity explained for placement rounds.
Lower Triangular Matrix Check: Programs in C, Java, Python
A square matrix is lower triangular when all entries above the main diagonal are zero. Programs in C, C++, Java, and Python with traced example and complexity analysis.
Check if a Matrix Is Upper Triangular: Code and Complexity
Verify whether a square matrix is upper triangular: the below-diagonal condition, verified C, Python, and Java code, and O(n²) complexity analysis for placement rounds.
Kth Smallest Element in an Unsorted Array: 4 C++ Approaches
Four C++ methods to find the Kth smallest element in an unsorted array: sort, QuickSelect, max-heap, and nth_element, with complexity trade-offs and placement tips.
Find Duplicate Elements in an Array: 5 Approaches
Five approaches to find duplicates in an array: O(n²) nested loops, sort-and-scan, hash set, XOR trick, and Floyd's cycle detection, with C, C++, and Python code.
ASCII Value of a Character: C, C++, Java, Python
Programs to find the ASCII value of a character in C, C++, Java, and Python. Key ASCII ranges, worked examples, and interview variants for placement tests.
The Handshakes Problem: Formula, Derivation, and Code
Derive the handshakes formula step by step, verify worked examples, and implement the solution in Python and C. A combinatorics guide for placement aptitude rounds.
Maximum Product Subarray: Algorithm, Code, and Dry Run
Find the maximum product subarray using the max-min tracking method. Algorithm steps, dry run table, Python and C code, complexity analysis, and placement context.
Maximum Scalar Product of Two Vectors: Algorithm and Code
Find the maximum scalar product of two vectors by sorting both arrays in the same order. Algorithm, complexity analysis, and verified C and Python code.
Find Min and Max in Each Row of a Matrix
C and Python programs to find minimum and maximum elements in each row of a matrix. Includes algorithm, complexity analysis, and placement test variations.
Get the AI Career Roadmap 2026 (free PDF)
2026 placement-drive AI patterns, project picks recruiters credit, and a prep timeline that fits beside aptitude and coding work.
Download the free PDF