Tech Mahindra Coding Questions Practice

Landing a job at a reputed organization like Tech Mahindra requires more than just academic excellence. With its emphasis on technical aptitude and real-world problem-solving, Tech Mahindra’s recruitment process stands out for its thoroughness and competitive nature. Coding questions play a central role in evaluating candidates’ readiness for software development roles, demanding precision, efficiency, and algorithmic thinking.

Whether you’re a fresher preparing for your first big break or a lateral hire aiming to level up your career, mastering the structure and approach to these coding rounds is crucial. These assessments often mirror actual on-the-job challenges, making it to be well-versed in programming languages like C, C++, Java, and Python, and to practice regularly with a variety of problems across topics like arrays, recursion, and dynamic programming.

Common Topics in Tech Mahindra Coding Questions

The coding questions in Tech Mahindra recruitment exams often revolve around specific core areas. Here is a table summarizing some of the most common topics and subtopics covered in the coding round:

Types of Coding Questions Asked in Tech Mahindra

To assess a candidate’s breadth of knowledge and logical thinking, Tech Mahindra uses a variety of code tasks. Simple Logic Building Questions focus on basics like string reversal, palindrome checks, prime number validation, or array manipulations. These test how well you understand loops, conditions, and fundamental syntax. Pattern Printing Questions are also common, where you need to use nested loops to create specific visual patterns with numbers or symbols. Mathematical & Formula-Based Questions may include finding factorials, LCM, or solving problems using formulas like the sum of N numbers. 

Array and String Manipulation questions require skills like finding duplicates, rotating arrays, or removing vowels from a string. Advanced Data Structure Questions involve trees, stacks, queues, and linked lists—like detecting cycles or traversing structures recursively. Dynamic Programming & Recursion questions may also be included in higher difficulty levels. Time and Space Optimization problems test your ability to improve performance using better algorithms. Overall, Tech Mahindra’s test balances logic, efficiency, and clarity of code.

Format of the Coding Round in Tech Mahindra Interviews

The coding round typically appears either in the online assessment stage or during the technical interview. The format is structured to evaluate time complexity, logic, and code optimization. Below is a typical layout:

Sample Tech Mahindra Coding Questions with Explanation

Tech Mahindra’s coding assessments are designed to test logical thinking, programming fundamentals, and real-time problem-solving ability. Strings, arrays, data structures, and algorithmic logic are among the subjects that are frequently covered in questions. For instance, you might be asked to reverse a string without built-in functions—testing loops and character manipulation. Another common type involves finding the missing number in a sequence using mathematical formulas. Palindrome checks evaluate your ability to use pointers effectively. 

You could also face advanced problems like implementing a queue using two stacks, which tests your of stack behavior. Lastly, string problems like identifying the longest substring without repeating characters assess your grasp of hashmaps and sliding windows. Each question not only checks technical knowledge but also clarity of logic and coding efficiency.

Reverse a String Without Using Built-in Functions

To reverse a string manually, start from the end of the string and iterate backward. Use a loop to pick each character from the last index to the first. During the iteration, append every character to a fresh string. Avoid using functions like reverse() or slicing shortcuts. This approach ensures you understand basic string manipulation and iteration.

Determine the Missing Number in a 1–N Array

First, find the expected sum using the formula: n*(n+1)/2, where n is the total count. Here, n should be the length of the array + 1 (since one number is missing). Next, calculate the actual sum of all elements present in the array. To determine the missing number, deduct the actual sum from the anticipated value. This method is efficient and works in O(n) time without extra space.

Check if a String is a Palindrome

A palindrome reads the same forward and backward. Compare the first and last characters first, then work your way inward. Continue comparing until you reach the middle of the string.
If all characters match in this way, it’s a palindrome. This approach is effective for validation and does not require reversing the string. 

Implement Queue Using Stacks

Make use of two stacks: one for dequeue operations and one for enqueue operations.
Push elements onto the first stack when enqueuing. When dequeuing, if the second stack is empty, transfer all elements from the first stack. Pop from the second stack to get the front element. This simulates FIFO behavior using two LIFO structures.

Find Longest Substring Without Repeating Characters
A sliding window method can be used to monitor the current substring. Keep track of each character’s last seen position in a hashmap. If a character appears more than once, move the window’s start point past that point. Update the maximum length when you enlarge the window. This method offers optimal time complexity and handles all edge cases.

Tips for Practicing Tech Mahindra Coding Questions

Focus on Core Concepts: Strengthen your of arrays, strings, loops, and recursion. These form the foundation of most questions asked in Tech Mahindra tests. Practice on Platforms: Regularly solve problems on trusted platforms like Leet Code, Geeksfor Geeks, Code Chef, and Hacker Rank to get used to real coding environments. Time Management: Simulate exam conditions by setting strict time limits for each problem and aim to improve your coding speed without compromising accuracy. 

Debugging Skills: Instead of relying solely on print statements, to trace logic mentally and use debugging tools where available for better efficiency. Examine Previous exams: To better coordinate your preparation, examine previous Tech Mahindra exams to find recurring question patterns and areas of focus. Write Clean Code: Use meaningful variable names, proper indentation, and comments where necessary—this improves readability and minimizes logical errors. 

Most Effective Coding Practice Strategy

Practice regularly by solving real interview questions. Here’s a structured table to guide your weekly preparation:

Mistakes to Avoid in the Coding Round

Ignoring edge cases: Test your code with all types of inputs like empty arrays, zeros, or large values to ensure robustness.
Not optimizing code: Brute-force solutions may work but often fail under time limits—aim for better time and space complexity.
Syntax errors: Stick to one primary language and master its syntax to avoid basic but costly mistakes during execution.
Skipping comments: Adding short, relevant comments helps showcase your thought process and makes your code more readable.
Overconfidence: Never jump to conclusions—carefully read and understand all problem constraints before coding.
Lack of testing: Always validate your final solution with multiple test cases to avoid surprises during evaluation.

Wrapping Up

Understanding Tech Mahindra code problems requires a methodical and deliberate approach to preparing. Begin by strengthening your basics in data structures, algorithms, and problem-solving techniques. Don’t rely on rote memorization—grasp the logic and reasoning behind every solution you attempt. Practice regularly under timed conditions to build both speed and accuracy. Analyzing previously asked questions and identifying common patterns can give you a significant edge. 

Always test your code thoroughly for edge cases and focus on writing optimized, clean solutions. Use online coding platforms to simulate real assessment scenarios. Balance your learning between theoretical and practical implementation. Stay updated with current hiring trends and expectations from Tech Mahindra. Review your progress periodically and refine your weak areas. Keep your confidence high, stay consistent, and tackle each question with logic and calmness. With the right mindset and discipline, success is absolutely within reach.

FAQs

What programming languages are allowed in Tech Mahindra coding rounds?

Tech Mahindra typically allows candidates to code in C, C++, Java, and Python during its online technical assessments. It’s important to choose one language you’re most proficient in and consistently practice with it. This helps avoid syntax errors during high-pressure coding tests. Mastering one language deeply is often more effective than juggling between multiple ones.

How many coding questions are asked in Tech Mahindra placements?

In most placement rounds, Tech Mahindra asks around 2 to 3 coding questions in the technical section. These questions are designed to assess logic, algorithm application, and efficiency. You’re usually expected to solve them within a time limit of 45–60 minutes. The questions may range from easy logic-building to complex data structure problems.

Can I clear Tech Mahindra without being an expert in data structures?

Yes, it’s possible to clear the coding round without being a complete expert. However, having a strong of basic data structures like arrays, strings, stacks, and queues is crucial. You should know how to use these efficiently in coding problems. Smart use of simple logic often helps more than complex implementations.

How should I practice for Tech Mahindra’s coding round?

Begin with basic problems on arrays, loops, and strings before moving to intermediate-level challenges. For organized practice, use sites such as Leet Code, Geeksfor Geeks, and Hacker Rank. Always set time constraints to mirror real exam settings. Review each solution to understand where you can improve in terms of logic or performance.

Are questions repeated in Tech Mahindra coding assessments?

While the exact questions may not repeat word-for-word, many of the patterns do. Common concepts like palindrome checks, missing number problems, and array-based logic often reappear in some form. Practicing frequently asked topics gives you an advantage in spotting familiar logic during the exam.

How important is code optimization in Tech Mahindra coding tests?

Tech Mahindra evaluations include code optimization. While functional solutions are accepted, optimized code shows your of time and space complexity. Avoid brute-force techniques when possible and aim for O(n) or O(log n) solutions. Optimized code is more scalable and performs better under test constraints.

Which subjects are frequently included in Tech Mahindra coding questions?

Common topics include string manipulation, array operations, recursion, sorting algorithms, and basic data structures. You may also encounter questions on pattern printing, mathematical logic, and problem-solving using loops and conditions. Focusing on these areas during preparation significantly improves your chances of clearing the coding round.