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Paytm interview questions

754 questions from 67 candidate reports · 2014 to 2024

Online test → Technical → Technical → HR·67% entry level

CS fundamentals

Showing 17 of 413 reported in this area

Explain ACID properties in DBMS
asked 3×easyPractice this →
Explain how garbage collection works in Java
asked 2×mediumPractice this →
Explain the internal working of HashMap in Java.
asked 2×mediumPractice this →
What is the Singleton design pattern?
asked 2×easyPractice this →
What features were introduced in Java 8?
asked 2×easyPractice this →
What is polymorphism in object-oriented programming?
asked 2×easyPractice this →
How is memory managed in Java?
asked oncemediumPractice this →
What are Python magic methods?
asked oncemediumPractice this →
Explain join operations in SQL.
asked oncemediumPractice this →
Explain isolation levels in SQL.
asked oncemediumPractice this →
Explain multi-threading in Java.
asked oncemediumPractice this →
Explain garbage collection in C++
asked oncemediumPractice this →
Explain SQL joins and their types.
asked oncemediumPractice this →
Explain the diamond problem in C++.
asked oncemediumPractice this →
Create a deadlock condition in Java.
asked oncemediumPractice this →
Is static data serializable in Java?
asked oncemediumPractice this →
Design test cases for given situations
asked oncemediumPractice this →

DSA

Showing 31 of 409 reported in this area

Permute the elements of an array following a given order
asked 3×mediumPractice this →
Reverse a linked list
asked 3×easyPractice this →
Detect a loop in a linked list
asked 3×easyPractice this →
Print the top view of a binary tree.
asked 2×mediumPractice this →
Find the lexicographic rank of a string
asked 2×mediumPractice this →
Reverse a linked list in groups of size k
asked 2×mediumPractice this →
Search an element in a rotated sorted array
asked 2×mediumPractice this →
Find the Kth largest element in an unsorted array
asked 2×mediumPractice this →
Find the missing and repeating number in an array.
asked 2×mediumPractice this →
Find the longest palindromic substring in a given string.
asked 2×mediumPractice this →
Design a stack that supports getMin() in O(1) time and O(1) extra space.
asked 2×mediumPractice this →
Design and implement an LRU Cache.
asked 2×hardPractice this →
Sort an array of 0s, 1s and 2s
asked 2×easyPractice this →
Print the left view of a binary tree
asked 2×easyPractice this →
Reverse a linked list using recursion
asked 2×easyPractice this →
Find the largest sum contiguous subarray.
asked 2×easyPractice this →
Check whether a given string is a palindrome
asked 2×easyPractice this →
Check whether a number is a circular prime or not
asked 2×easyPractice this →
Perform zigzag (spiral) traversal of a binary tree.
asked 2×easyPractice this →
Reverse tree path
asked oncemediumPractice this →
Clone a linked list
asked oncemediumPractice this →
Sort a linked list.
asked oncemediumPractice this →
Flatten a linked list.
asked oncemediumPractice this →
Painting Fence Problem
asked oncemediumPractice this →
Detect a cycle in a graph.
asked oncemediumPractice this →
Convert a given number to words
asked oncemediumPractice this →
Reverse a stack using recursion
asked oncemediumPractice this →
Rotate a 2D matrix by 90 degrees
asked oncemediumPractice this →
Print the right view of a binary tree
asked oncemediumPractice this →
Traverse a 2D matrix in spiral order.
asked oncemediumPractice this →
Compute the diameter of a binary tree.
asked oncemediumPractice this →

System design

Showing 3 of 36 reported in this area

Design a URL shortener system like TinyURL.
asked oncemediumPractice this →
Design a Logger class using Singleton design pattern.
asked oncemediumPractice this →
Design database tables for a Splitwise-like application
asked oncemediumPractice this →

Puzzles

Showing 3 of 14 reported in this area

Solve the puzzle where 100 windows are toggled (open/close) in multiple passes.
asked oncemediumPractice this →
Given 8 balls where one ball is of different weight, find the odd ball using the minimum number of comparisons.
asked oncemediumPractice this →
25 horses puzzle (find the fastest 3 horses with minimum races)
asked oncehardPractice this →

Aptitude

Showing 3 of 10 reported in this area

A variation of the Box of Defective Balls probability problem
asked oncemediumPractice this →
At 3:15 on a clock, find the angle between the hour hand and the minute hand
asked oncemediumPractice this →
If distance A to B is x at speed 40 km/hr and distance B to C is 2x at speed y, find y such that the average speed of the whole journey is 40 km/hr
asked oncemediumPractice this →

Behavioural

Showing 3 of 7 reported in this area

What are the test cases for a television remote?
asked oncemediumPractice this →
How would you test a login page? List the test cases.
asked oncemediumPractice this →
Describe a situation where you faced conflict within a team and how you resolved it.
asked oncemediumPractice this →

Showing 60 of 754 questions. Ranked by how often the same question came back across reports.

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Common questions

What questions does Paytm ask?

Candidate interview reports most often cover CS fundamentals (46%) and DSA (46%).

How many rounds does Paytm interview have?

Candidate interview reports show an average of 3.5 rounds per experience, with a typical sequence of Online test → Technical → Technical → HR. Individual interview paths can vary.

Is the Paytm interview hard?

Among questions with a reported difficulty, the mix is easy 41%, medium 53%, hard 7%.

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