Placement preparation
Aptitude, coding, verbal ability, and reasoning, broken down with worked examples for Indian engineering placements. 539 articles.
Python Inbuilt Looping Functions: A Complete Guide
Python's nine built-in iteration helpers: range, enumerate, zip, map, filter, sorted, reversed, iter, and next, with code examples for placement coding rounds.
Python Input: input(), Type Conversion, and Multiple Values
Learn how Python's input() function works, how to convert strings to int or float, read multiple values with split() and map(), and handle EOFError in placement tests.
Regular Expressions in Python: A Complete Guide
Python's re module: core syntax, API functions (search, findall, sub, split), compiled patterns, and real-world email and log examples for placement coding rounds.
Sort All Elements of a Matrix in Ascending Order
Sort every element of an M×N matrix in ascending order: flatten-sort-refill algorithm, worked 3×3 example, row-wise variant, and edge cases explained.
Spiral Matrix Printing: Print a 2D Matrix in Spiral Order
Print a 2D matrix in spiral order with the boundary-shrink approach. Python and Java solutions with traced examples for 3×3, 3×4, and edge cases.
Python operator Module: Operators as First-Class Functions
Python's operator module turns every built-in operator into a callable: add, mul, itemgetter, and more. Faster than lambdas in tight loops.
Squaring Numbers Ending in 5: The n(n+1) Shortcut
Square any number ending in 5 in seconds: multiply the prefix by the next integer, append 25. Full algebraic proof, 2-digit and 3-digit examples, aptitude practice.
10 Technical Interview and Aptitude Questions: Set 6 (Solved)
Solved Set 6: arrays vs lists, OOP pillars, macros vs functions, Floyd's cycle detection, and swap-without-temp in C, ten questions campus drives test.
From Campus to Corporate: 10 Things Engineering Graduates Should Know
Your first IT job in India changes more than your schedule. Here are 10 things every engineering fresher should know before Day 1 at TCS, Infosys, or a product company.
Python Arrays: Operations, Patterns, and Placement Tips (2026)
Learn Python arrays with the array module, lists vs arrays, common operations, time complexity, and classic placement patterns like rotation and two-sum.
Polygons: Types, Properties and Formulas for Aptitude Tests
Polygon types, properties, and core formulas for placement aptitude: sum of interior angles, exterior angles, area formulas, and worked examples for TCS NQT and AMCAT.
Right Triangles: Definitions, Properties, and Aptitude Applications
Master right triangle properties, Pythagorean triples, 30-60-90 and 45-45-90 ratios, and trig ratios with worked placement aptitude examples.
How to Build Placement-Test Vocabulary: 4 Pillars and a 6-Week Plan
Placement tests draw from a 200-to-300 high-frequency word band. Master synonyms, antonyms, analogies, and sentence completion with root-affix strategy and a 6-week plan.
Static Functions in C: Scope, Linkage, and Examples
A static function in C restricts a function to its own source file via internal linkage. Learn scope, name-collision avoidance, and see a two-file worked example.
ZoomRx Careers 2026: Hiring Process, Roles, and Interview Pattern
ZoomRx is a life sciences analytics firm hiring freshers across Chennai and Bangalore. This 2026 guide covers roles, selection process, and interview rounds.
6 HR Interview Questions Every Fresher Gets Asked (Sample Answers)
The six HR questions that appear in nearly every campus placement interview. What interviewers test, how to structure answers using CAR framework, and mistakes to avoid.
Add Two Numbers in Python: 5 Methods with Code
Five Python methods to add two numbers: + operator, function, f-string one-liner, float input, and bitwise XOR. Code, output, and when to use each.
Advantages and Features of Python Programming (2026 Guide)
Python's advantages include readable syntax, 700K+ PyPI packages, cross-platform portability, and first-class AI/ML support. Honest look at the trade-offs too.
Merge Sort Algorithm in C, C++, and Java with Examples
Step-by-step merge sort implementation in C, C++, and Java. Covers divide-and-conquer logic, O(n log n) complexity, stability, and comparison with quicksort.
AMCAT Automata Question Bank: LRU Cache and Circular Linked List
Practice set for the AMCAT Automata coding round: LRU cache miss count and sorted circular linked list insertion, with traced test cases and grader notes.
Automation Anywhere Send Email Command: 2026 SMTP and HTML Setup Guide
Set up the Send Email command in Automation Anywhere: SMTP config, Gmail App Passwords, HTML formatting, and fixes for the most common email bot errors.
Bitwise Operators in Python: Truth Tables, Idioms, and Examples
Learn Python's 6 bitwise operators (AND, OR, XOR, NOT, left shift, right shift) with truth tables, placement idioms, and worked examples verified from first principles.
Bubble Sort in C, C++, and Java: Code and Complexity
Bubble sort implemented in C, C++, and Java with step-by-step trace, optimised early-exit variant, and O(n²) complexity analysis. Placement-interview ready.
Capitalize First and Last Letter of Each Word: Python, C, Java
Capitalize the first and last letter of each word in a string. Covers word-boundary detection, edge cases, and complete code in Python, C, and Java.
Check if a Substring Exists in a String in Python
Five ways to check if a substring exists in a Python string: in operator, find(), index(), count(), and re.search(). Edge cases and KMP included.
Python Closures: Lexical Scope, Late Binding, and Decorators
Learn how Python closures work: nested functions, lexical scope, the nonlocal keyword, the late-binding loop trap, and how decorators use closures under the hood.
Common C Programming Errors: 10 Mistakes to Fix Before Interviews
Syntax errors, off-by-one array indexing, and missing semicolons are the C mistakes that derail placement coding rounds. Here is how to fix every one of them.
break, continue, and pass in Python: A Practical Guide
Learn how break, continue, and pass work in Python loops, with verified code examples, the for-else pattern, and placement exam edge cases.
Factorial in Python: Three Methods for Placement Tests
Three ways to write a factorial in Python: for loop, recursion with the correct base case, and math.factorial, with placement aptitude context.
Guess the Number Game in Python: Code, Logic, and Variants
Build a number-guessing game in Python using random, input(), and while loops. Includes a basic version, a max-attempts variant, and higher-or-lower hint logic.
Python Data Types Explained: int, str, list, dict, tuple
Python determines a variable's type from its value, not a declaration. This guide covers int, float, str, list, tuple, set, and dict with placement-round examples.
Exception Handling in Python: Complete Guide
Python exception handling: try, except, else, finally, the exception hierarchy, custom exception classes, raise from chaining, and ExceptionGroup (Python 3.11+).
exit(), abort(), and assert() in C: When to Use Each
exit() cleans up buffers and calls atexit() handlers; abort() raises SIGABRT with no cleanup; assert() crashes debug builds on false conditions. Learn which to use when.
Find All Triplets With Given Sum: Three Approaches
Solve the find-all-triplets problem three ways: O(n^3) brute force, O(n^2) two-pointer, O(n^2) hashing. Worked trace and Python code.
Array Subset Check in C, C++, Java and Python
Four methods to check if an array is a subset of another, with C, C++, Java and Python code. Time complexity and duplicate handling for placement interviews.
Maximum Sum With No Two Adjacent Elements: DP Approaches Explained
Find the maximum sum of array elements with no two at adjacent indices. Recursive, memoised, and O(1)-space DP solutions with worked examples plus complexity analysis.
Find the Power of a Number: C, C++, Java, Python
Three approaches to computing the power of a number: iterative O(n), fast O(log n), and library calls. Code in C, C++, Java, and Python with edge-case notes.
Sum of Minimum Absolute Differences in an Array
Sort the array once to find each element's nearest neighbour in O(n log n) time. Python, C++, and C implementations with a worked example and edge case analysis.
Find the Total Number of Islands Using DFS
Count connected-component islands in a binary grid using DFS grid-coloring. Includes O(M×N) complexity proof, edge cases, and working C++, Java, Python code.
Vertical Sum in a Binary Search Tree: Algorithm and Code
Calculate the vertical sum of a BST by grouping nodes at the same horizontal distance. DFS and hashmap approach in Python and C++, with complexity analysis.
Fresher IT Jobs in Delhi NCR: 2026 Company and Application Guide
Cyber City Gurugram, Noida's IT corridor, and Connaught Place all hire IT freshers. Active employers, eligibility rules, and application routes for NCR in 2026.
Functions in Python: Practical Examples for Placement Prep
Functions in Python with examples: def keyword, arguments vs parameters, return values, recursion, *args/**kwargs, and the placement-test patterns interviewers reuse.
Python Generators: Generator Functions and Expressions with Examples
Learn how Python generators work, how yield differs from return, and why lazy evaluation matters in placement coding rounds and production pipelines.
Hello World in Python: Your First Program (2026)
Run print("Hello World") in Python 3.13, understand why the Python 2 print statement breaks in Python 3, add an f-string variant, and spot three errors beginners make.
Hello World in Python: Your First Program Explained
Learn to write and run a Hello World program in Python 3.14 using print(). Covers single quotes, double quotes, triple quotes, f-strings, and common beginner errors.
Variable Scope in C: Block, File, and Storage Class Rules
C has four kinds of variable scope. This guide covers block scope, file scope, storage classes, and the output puzzles that appear in placement tests.
How to Crack Verbal Ability in Placements: Test-Day Strategy
Test-day strategy for the verbal section in placement tests: attempt order, time-per-question, elimination heuristics, and a 7-day compressed plan.
How to Get a Job at Your Target Company in 2026
How engineering freshers can get hired at a specific target company, from profile building and referrals to company-specific interview prep.
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