Paytm Software Intern Interview Questions and Answers

Basic Oops MCQ and aptitude and one da

Q1. Basic dsa and project
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Q1. DSA and project related
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Q1. One leetcode easy-medium problem
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Q2. Java, springboot and oops question
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Q1. Project related questions
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Q2. System design questions
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You should be familiar with core java features. Collections, converting one collection Array / Vector to other. Removing duplicates. Lambda chaining / Functional programming. Basic SQL - Joins, Aggregates etc.

Q1. Explain Architecture of applications you worked on. Justify use of components. System Design questions.
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Maths,quant for 1 hour duration

Arrays, strings, linked list, palindrome

Q1. Basic oops, .net, c# coding, sql questions
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Q1. More coding and details on project
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Q1. More on projects and system design and troubleshooting approach
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Q1. Salary discussion
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Q1. More technical + managerial round even after HR round
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Q1. Core java Springboot Advance java
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Q2. Collection Annotation
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Q3. Programs Rest Architecture
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Q1. Basic Java questions
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Q1. What is dependency injection and inversion principle
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Dependency injection is a design pattern that allows objects to receive dependencies rather than creating them internally.
• Dependency injection is a way to achieve loose coupling between objects.

• It allows for easier testing and maintenance of code.

• Inversion principle states that high-level modules should not depend on low-level modules, but both should depend on abstractions.

• This principle helps to achieve a more flexib...read more
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Q2. Program to find missing number in array
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Program to find missing number in array
• Iterate through the array and calculate the sum of all elements

• Calculate the sum of all numbers from 1 to n (where n is the length of the array)

• Subtract the sum of array elements from the sum of all numbers to get the missing number
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