Placement prep + AI for engineers

PayPal Interview Process: Full Guide for 2026

PayPal campus selection for freshers: eligibility, HackerRank test, two technical rounds, HR interview, CTC bands, and application steps for 2026.

PayPal Interview Questions: DSA, Coding, and HR Prep

PayPal campus interviews cover DSA, OOP, and system design across a HackerRank test and two technical rounds. Question patterns and prep approach for 2026.

PayPal Placement Papers 2026: Test Pattern and Syllabus

PayPal's campus OA on HackerRank covers aptitude MCQs, programming concepts, and 1 to 3 coding problems. Section-wise syllabus and sample questions for 2026 prep.

PayPal Recruitment Process for Freshers: 2026 Guide

HackerRank OA, two technical rounds, fintech-focused interviews: complete 2026 guide to PayPal's SDE I campus process, eligibility, and coding preparation.

Permutations and Combinations: Formulas, Shortcuts, Worked Examples

Master nPr and nCr with the factorial formulas, shortcut tricks, and six verified worked examples used in campus placement aptitude tests.

Pipes and Cisterns Problems: Concepts and Worked Examples

Pipes and cisterns from first principles: fill rates, empty rates, LCM shortcut, and 8 worked examples covering every question type in campus placement aptitude tests.

Prepositions of Place: In, On, At and Beyond

Master every preposition of place: in, on, at, above, below, beside and more, with memory tricks and placement-test practice questions.

TCS Off-Campus Drive in Two Days: 48-Hour Prep Playbook

A TCS off-campus drive is 48 hours away. Here's how to spend them: NQT section triage, highest-ROI aptitude topics, coding track split, and what not to waste time on.

Profit and Loss: Key Concepts, Formulas, and Solved Examples

Master profit and loss for campus placement aptitude: CP, SP, marked price, discount chains, and 9 worked examples verified step by step.

Probability Formulas with Examples for Aptitude Problems

Probability formulas for placement aptitude tests, with worked examples on addition rule, multiplication rule, conditional probability, and replacement draws.

Profit and Loss: Concepts and Problems Solved Under 1 Min

Master profit and loss for campus placement aptitude tests. Core formulas, speed tricks, marked price, successive discounts, and 10 solved examples.

Find All Symmetric Pairs in an Array

Two approaches to find all symmetric pairs in an array: O(n^2) brute force and O(n) HashMap, with working C++, Python, and Java code.

Amicable Numbers (Friendly Pair): C, C++, Java, Python

Check amicable (friendly pair) numbers in C, C++, Java, and Python. Verified examples with (220,284), O(√n) algorithm, test cases, and placement context.

Find Sum of Digits of a Number: C, C++, Java, Python

Programs to find the sum of digits of a number in C, C++, Java, and Python. Iterative and recursive approaches with step-by-step traced outputs.

Program to Generate Tsunami Report in C, Java and Python

Step-by-step solutions in C, Java and Python for the Tsunami report problem: read three integers, print a numbered report in exact format.

Replace All 0 Digits with 1 in an Integer: Python, C and Java

Three approaches to replace every 0 digit with 1 in an integer: string conversion, digit extraction loop, and edge cases. Code in Python, C, and Java.

Program to Sort a String in Alphabetical Order in Python

Two Python approaches to sort a string alphabetically: the sorted() built-in and a manual loop. Covers time complexity, case handling, and edge cases.

Python Operator Precedence and Associativity Guide

Master Python operator precedence and associativity with a full table, five traced examples, and the right-to-left rule that makes 2 ** 3 ** 2 return 512.

Quick Sort in C, C++, Java and Python: Full Guide

Quick sort tutorial covering Lomuto partition with step-by-step trace, pivot selection, and C, C++, Java, Python implementations with complexity analysis.

How to Solve Syllogism Problems: Venn Diagrams + Rules

Master syllogism problems for placement aptitude tests. Covers the four statement types, Venn diagram method, distribution rules, and 8 worked examples with fallacies.

Remove Brackets from Algebraic Expressions: C, Java, Python

Stack-based sign-aware algorithm to remove brackets from algebraic expressions. Covers C, C++, Java, Python with hand-traced examples and edge cases.

Samsung Interview Questions: Technical and HR Rounds 2026

Samsung R&D India recruits for software roles with a technical bar closer to product companies than IT services. Technical and HR round questions with answers.

7 May 2026 · 9 min read

Samsung Recruitment Process for Freshers (2026 Guide)

Samsung India hires freshers through SRI-B, SRI-N, and SSIR. Covers the 2026 written test, technical rounds, CTC bands, and eligibility for CS and ECE.

Siemens Selection Process for Freshers: 2026 Guide

Siemens recruits freshers via three rounds: online aptitude test, technical interview, and HR interview. Full 2026 syllabus, sample questions, and prep tips.

Calendar Problems for Competitive Exams: Speed Tricks

Four question types, one day-of-week formula, and three traps that cost time in TCS NQT, AMCAT, and Mu Sigma MuApt calendar sections.

Clock Problems for Competitive Exams: Formula Guide

Master clock angle, coincidence, and gain-loss problems for placement aptitude tests. All formulas derived step-by-step, with eight worked examples.

7 Must-Solve TCS Aptitude Questions (2026) with Full Solutions

Practice 7 must-solve TCS aptitude questions with step-by-step solutions covering HCF/LCM, trains, successive discounts, percentages, and mensuration.

Multiply Any Number by 11: The Split-Sum Shortcut

The split-sum trick lets you multiply any number by 11 mentally, in seconds. Worked examples for 2-, 3-, and 4-digit numbers with carry handling.

Space Complexity of Algorithms: Worked Examples

Space complexity with worked examples: O(1), O(n), O(log n), and O(n²) derivations, the merge sort misconception corrected, and placement test context.

Jumbled Sentences: Strategies for Placement Tests

Four strategies with worked examples to solve parajumble questions in TCS NQT, Infosys, and AMCAT verbal ability sections.

Python String Slicing: Syntax, Examples, and Patterns

Learn Python string slicing: syntax, negative indices, step slices, and string reversal. Includes palindrome and word-reversal patterns for placement coding rounds.

Sum of Array Elements in Python: Three Approaches

Three ways to sum array elements in Python: built-in sum(), a for loop, and functools.reduce(). Code verified from first principles for CRT placement rounds.

Atos|Syntel Logical Reasoning: Recruitment Test Questions 2026

The Atos|Syntel recruitment test logical reasoning section: 9 verified worked examples across coding-decoding, syllogisms, ranking problems, and data sufficiency.

Tata Communications Interview: Technical and HR Round Guide

Tata Communications recruits freshers through a technical and HR round. Networking, OOP, and DBMS questions with a four-week prep plan.

Tata Communications Placement Papers: Pattern and Solved Questions

Practice Tata Communications placement papers with aptitude, logical reasoning, and verbal questions. Verified solutions and test pattern explained.

Tata Elxsi Placement Papers: Test Pattern and Sample Questions

MeritTrac online test pattern, analytical and verbal sections, sample technical questions with worked solutions, and preparation timeline for Tata Elxsi freshers.

Tata Elxsi Technical Interview Questions: 2026 Guide

Tata Elxsi technical interview questions with verified answers for Embedded and Software Engineer roles: embedded C, digital logic, and C programming.

TCS Coding Questions and Answers (2026 Guide)

Five worked TCS NQT coding problems with hand-traced Python solutions. Covers palindrome check, base-17 conversion, digit sums, prime range, and array reversal.

TCS Digital Aptitude and Technical Questions 2026

Practice TCS Digital aptitude questions and technical MCQs with worked solutions. Covers eligibility, Advanced NQT pattern, DSA, DBMS, OS, and coding round.

TCS Digital Questions: Quant, Verbal, and Coding (2026)

Actual TCS Digital placement paper questions with worked solutions. Verbal, quant, and advanced coding sections for the Rs 7 to 7.5 LPA fresher hiring track.

TCS Digital Exam Pattern and Syllabus 2026

The 2026 TCS Digital online test has 83 questions across Foundation and Advanced sections in 190 minutes. Full pattern, syllabus, and what separates Digital from Ninja.

TCS Email Writing Questions: Format, Examples, and 2026 NQT Context

TCS Email Writing ran until 2018; coding replaced it in the NQT. Three worked examples, key formatting rules, and the Verbal Ability section students prepare for today.

TCS Placement FAQs: NQT, Coding, and Interview Guide 2026

Answers to the most common TCS placement questions: NQT pattern, negative marking, coding test format, interview rounds, and the AI skills shift in 2026.

TCS Ninja English Questions: NQT Verbal Ability 2026 Guide

TCS NQT Verbal Ability: 24 questions, 30 minutes, no negative marking. Covers all five question types, worked examples, and a two-week prep schedule.

TCS Ninja Programming MCQs: 11 Questions with Verified Answers

Practice 11 TCS Ninja NQT programming MCQs covering C language, pointer mechanics, and data structures. All answers re-derived from first principles for 2026.

TCS NQT Interview Questions: Technical and HR Round Guide

What TCS asks in Technical and HR rounds after NQT clearance. Question patterns for Ninja, Digital, and Prime tracks, plus tips for CS and non-CS branches.

TCS NQT 2026: Question Paper Pattern and Worked Solutions

Worked solutions for TCS NQT Numerical Ability, Reasoning, and Programming Logic. Section-wise 2026 pattern, track cutoffs, and step-by-step solved examples.

TCS NQT Syllabus 2026: Full Pattern and Section Guide

TCS NQT 2026 runs for 190 minutes across two mandatory parts. Complete syllabus, eligibility criteria, and how scores route to Ninja, Digital, or Prime tracks.