TCS SDE Sheet: Interview Questions and Answers

Last Updated : 09 Feb, 2024

What is TCS NQT ?

TCS NQT is National Qualifier Test conducted by Tata Consultancy Services, it is a prerequisite for all the tests. The validity of the NQT score is of two years. Candidates are eligible to apply on the TCS iON Job Listing Portal with an NQT score. NQT exams are conducted in both online and offline modes. This sheet will help you prepare for the TCS NQT exam & you can apply for all the top-notch companies that recognize the exam score. Here we have collected all the interview questions and answers to land a job at TCS.

TCS SDE Sheet

TCS NQT Syllabus

Verbal Ability

Aptitude & Reasoning Ability

Programing Logic:

Data Structures
Algorithms
OOPS Concepts

Coding Section:

Arrays
String
Number Series
Conversions
Sorting Algorithm

What does this sheet Contains ?

This article contains TCS coding questions i.e. the coding questions that are mostly asked in TCS hiring challenges on different topics. The questions are arranged topic-wise in this sheet along with their solutions.

TCS Ninja and Digital profiles are selected on the basis of the TCS NQT test score. These two profiles differentiate the employees on the basis of coding and interview experience.

TCS Digital: TCS Digital hires for the Digital Technology Domain, specializing in IoT, AI, ML, Big Data, Virtual Reality, BlockChain, NLP, etc. There are three ways of landing the TCS Digital offer.
TCS Ninja: TCS Ninja profile is hired through TCS NQT test, based on the score you scored in NQT you will choose as Ninja. It offers package of 3.36 to 3.60.

Verbal Ability: In TCS NQT there are 25 questions and the given time was 75 minutes to check your proficiency on English, like easy writing and questions answering.

Aptitude & Reasoning Ability: Here in this Aptitude & Reasoning test the numerical and the reasoning ability sections are tested. We attached 10 set to practice yourself.

Programming Logic: Your knowledge of C, C++, and Java is tested in the TCS NQT Programming Logic exam, but that is not its only purpose. To answer questions like OOPS, DSA, etc., you must have a solid grasp of computer science Concepts There are a sufficient number of Data Structures Problems. To prepare you for the test, let’s first go through the fundamental guidelines

Data Structures:A data structure is a storage that is used to store and organize data. It is used for processing, retrieving, and storing data. There are different basic and advanced types of data structures used in almost every program or software system that has been developed.
Algorithms:Algorithm refers to a sequence of finite steps to solve a particular problem.The word Algorithm means ” A set of rules to be followed in calculations or other problem-solving operations ” Or ” A procedure for solving a mathematical problem in a finite number of steps that are frequently by recursive operations “.
OOPS Concepts: As the name suggests, Object-Oriented Programming or OOPs refers to languages that use objects in programming, they use objects as a primary source to implement what is to happen in the code.Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism etc.

Coding Section: In the Coding section of TCS NQT, they asked questions from the below-mentioned topics:

Arrays: Here is the collection of the frequently asked interviews question on arrays in the TCS hiring test.

Problems	Practice
Non-Repeating Element	Solve
Program for array rotation	Solve
Equilibrium index of an array	Solve
Print array after it is right rotated K times	Solve
Array is a subset of another array	Solve
Find all symmetric pairs from a pairs of array	Solve
Counting Rock Samples	Solve
Reverse an array or string	Solve
Mean and median of an unsorted array	Solve
Smallest and second smallest elements in an array	Solve
Largest element in an array	Solve
Second largest element in an array	Solve
Counting frequencies of array elements	Solve
Program for addition of two matrices	Solve
Sort a K-Increasing-Decreasing Array	Solve
Sum of elements in a given array	Solve
Remove duplicates from the sorted array	Solve
Program to check if an array is sorted or not	Solve
Remove duplicates from an unsorted array using Map data structure	Solve
Block swap algorithm for array rotation	Solve
Average of an array (Iterative and Recursive)	Solve
Add an element to an Array	Solve
Find duplicates in O(n) time and O(1) extra space	Solve
Find maximum possible stolen value from houses	Solve
Replace each element of the Array with it’s corresponding rank	Solve
Sort elements by frequency	Solve
Sort an array according to the order defined by another array	Solve
Maximum Product Subarray	Solve

String: Here is the collection of the frequently asked interviews question on strings in the TCS hiring test.

Problems	Practice
Count vowels, consonants, digits, and special characters in a string	Solve
Given String is Palindrome or not	Solve
ASCII Value of a character	Solve
Remove vowels from a String	Solve
Remove spaces from a given string	Solve
Remove character	Solve
Remove all characters other than alphabets	Solve
Reverse a string	Solve
Sum of numbers in string	Solve
Capitalize first and last character of each word	Solve
Frequency of characters in a string	Solve
Non Repeating Character	Solve
Smallest and Largest Word in a String	Solve
Strings are anagram of each other	Solve
Sort string of characters	Solve
Convert characters of a string to opposite case	Solve
Count words in a given string	Solve
Encrypt the string	Solve
Remove duplicates from a given string	Solve
Duplicates in the input string	Solve
Lexicographically next string	Solve
Remove brackets from an algebraic expression	Solve
Check if a string is substring of another	Solve
Reverse words in a given string	Solve
Common subsequence in two strings	Solve
One string contains wildcard characters	Solve

Number Series: While a sequence is a list of items arranged in a sequential way following a particular relation, a series is the cumulative sum of a given sequence of terms.

Problems	Practice
Prime Numbers	Solve
Sum of arithmetic series	Solve
Sum of geometric series	Solve
All divisors of a natural number	Solve
Replace all ‘0’ with ‘5’ in an input Integer	Solve
Number is Positive, Negative, Odd, Even, Zero	Solve
Harshad (Or Niven) Number	Solve
Program to find GCD or HCF of two numbers	Solve
LCM of two numbers	Solve
Check if a number is a strong number or not	Solve
Check if a given year is leap year	Solve
Reverse digits of a number	Solve
Program to add two fractions	Solve
Sum of digits of a number	Solve
Find all factors of a natural number	Solve
Prime factors of a given number	Solve
Kth largest factor of number N	Solve
Given number is even or odd	Solve
Perfect Number	Solve
Palindromes in a given range	Solve
Armstrong Numbers	Solve
Abundant Number	Solve
Sum of first n natural numbers	Solve
Sum of all natural numbers in range L to R	Solve
Primitive Abundant Number	Solve
Count ways to reach the n’th stair	Solve
Count prime numbers that can be expressed as sum of consecutive prime numbers	Solve
Fibonacci numbers	Solve
Check if a number is Palindrome	Solve
Largest and smallest digit of a number	Solve
Square Free Number	Solve
Permutations to arrange N persons around a circular table	Solve
Can a number be expressed as a sum of two prime numbers	Solve
Area of a circle	Solve
Roots of Quadratic equation	Solve

Conversions: We need to write a program to convert the given number(specific number system) into an equivalent number(specific number system).

Problems	Practice
Convert Binary to Decimal	Solve
Convert binary to octal	Solve
Decimal to Binary conversion	Solve
Convert decimal to octal	Solve
Convert Octal to binary	Solve
Convert Octal to decimal	Solve
Convert a given number to words	Solve