TCS Senior Software Developer Interview Questions and Answers

Q1. Basics Java question on polymorphism, Interface, objects, Java 8 features.
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Q2. Given an array of strings, return each character along with the count of its occurrences within that array. For instance, given the input: ["apple", "rat"], the output should be: a:2, p:2, l:1, e:1, r:1, t...read more
Ans. 
Count character occurrences in an array of strings using brute force and optimized methods.
• Brute Force: Iterate through each string and count characters using nested loops.

• Optimized: Use a hash map (dictionary) to store character counts in a single pass.

• Example Input: ['apple', 'rat']

• Example Output: a:2, p:2, l:1, e:1, r:1, t:1
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Q1. Do you know microfrontend
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Microfrontend is a software architectural style where a frontend application is decomposed into smaller, more manageable pieces.
• Microfrontend allows teams to work on different parts of the frontend independently.

• Each microfrontend can be developed, tested, and deployed separately.

• Microfrontend architecture helps in scaling large frontend applications.

• Examples of microfrontend frameworks include single-spa, Webpack Modu...read more
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Q2. How to setup env in angular app, pipes asynch pure impure, subject and subject behavior only theory
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Setting up environment in Angular app, understanding pipes, async, pure/impure, Subject and BehaviorSubject in theory
• Setting up environment in Angular app involves configuring environment files for different environments like development, production, etc.

• Pipes in Angular are used for transforming data in templates. Async pipes are used for handling asynchronous data streams.

• Pure pipes are stateless and only recompute w...read more
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1 hours was the interview

Q1. Tell about your self
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Q2. Tell me about your previous company
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Q1. Rollup component working
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A Rollup component is used to aggregate data from multiple rows into a single row.
• Rollup component is commonly used in SQL queries to perform calculations on grouped data.

• It can be used to calculate subtotals, grand totals, and other aggregate functions.

• For example, you can use a Rollup component to calculate the total sales for each region in a sales dataset.
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Q2. NRZ component working
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NRZ (Non-Return-to-Zero) is a digital signal encoding scheme used in data transmission.
• NRZ encodes data by representing a 1 bit as a high voltage level and a 0 bit as a low voltage level.

• There are two types of NRZ encoding: NRZ-L (Non-Return-to-Zero Level) and NRZ-I (Non-Return-to-Zero Inverted).

• NRZ-L keeps the voltage level constant for the duration of the bit time, while NRZ-I inverts the voltage level for each 1 bit...read more
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