representing the preference of each guest (1 for vegetarian, 0 for non-vegetarian). To avoid conflict, no two non-vegetarians can sit next to each other. Determine if the current seating arrangement is valid. An array of integers containing only 0s and 1s.
Modified string.
Tata Consultancy Services (TCS) is one of the largest IT services companies in the world. Every year, lakhs of engineering students and software aspirants compete for a coveted role at TCS through placement drives like TCS NQT (National Qualifier Test) and TCS Digital.
An autobiographical number is an integer N such that the first digit (from left) counts how many zeros are in N, the second digit counts how many ones, and so on. Given a number (as a string), verify if it's autobiographical.
import java.util.Scanner;
Below are three highly representative coding questions asked in the 2021 TCS NQT batches, complete with logic and optimized code implementations. Problem 1: The Sweet Seating Arrangement (Array/Logic)
The 2021 question bank heavily favored arithmetic logic, array traversals, and string manipulation techniques. Topic Category Core Concepts Tested Base conversions, series generation, prime numbers Array Manipulation Subarrays, matrix rotations, sliding window String Processing Palindromes, anagrams, custom tokenization Data Structures Hashing, stacks, custom structures 3. High-Frequency Questions & Solutions
Palindrome checking, anagrams, substring searching, character frequency counting, and string tokenization.
The year 2021 was a transformative period for the recruitment process, particularly with the widespread adoption of the National Qualifier Test (NQT) . This period saw a significant shift toward automated coding assessments that tested not just basic logic, but also mathematical aptitude and real-time problem-solving under strict time constraints. Tcs Coding Questions 2021
Input: "WWWNWWWNW" Output: "FNWFNW" (first three W→F, then single N, then next three W→F, then N, then single W).
For top performers (approximately the top 10% of TCS NQT candidates), TCS offered an additional "Toppers Test" consisting of two high-difficulty coding questions to be completed in 60 minutes. Successful completion of this test opened doors to the TCS Digital interview process, which offered a higher salary package.
def main(): trainees = [0, 0, 0] try: # Read 9 inputs for 3 trainees across 3 rounds for round_idx in range(3): for trainee_idx in range(3): oxygen = int(input()) if 1 <= oxygen <= 100: trainees[trainee_idx] += oxygen else: print("INVALID INPUT") return except ValueError: print("INVALID INPUT") return # Calculate averages averages = [round(total / 3) for total in trainees] max_avg = max(averages) # If the maximum average is below 70, everyone is unfit if max_avg < 70: print("All trainees are unfit.") return # Print trainees matching the maximum average for i in range(3): if averages[i] == max_avg: print(f"Trainee Number : i + 1") if __name__ == "__main__": main() Use code with caution.
Solutions had to pass strict time-complexity limits (usually 1.0 second) and hidden test cases. representing the preference of each guest (1 for
Medium-Hard Marks: 18
Minimum difference.
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