Based on previous year papers, the following are common problem statements: Key Problem Types Second smallest/largest, rotation by , symmetric pairs, max product subarray.
Prime numbers, GCD/LCM, Fibonacci series, base conversions (binary, octal, decimal), matrix operations, and series generation.
Test your code against empty inputs, negative numbers, or maximum constraints. Tcs Coding Questions 2021
Focus heavily on Arrays, Strings, and basic Mathematics in C++ or Python.
while(N > 0) int digit = N % 10; rev = rev * 10 + digit; N = N / 10; Based on previous year papers, the following are
Iterate through the range, convert each number to a string, and check if the count of unique characters equals the total character count. 4. Key Preparation Resources (Most Asked) TCS NQT Coding Questions and Answers 2021
Generate a series where even positions are the Fibonacci sequence and odd positions are Prime numbers. Series Example: n raised to the t h power term of this mixed series. Quick Tips for Success Focus heavily on Arrays, Strings, and basic Mathematics
Understanding int **ptr (pointer to a pointer) and address arithmetic.
Remember: In TCS coding rounds, your code must pass all test cases to qualify—partial solutions do not receive credit. Practice writing complete, robust solutions that handle all input constraints effectively.
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