Paytm Money Interview Questions and Answers

JavaScript questions

Arrays, LinkedList basic dsa questions

Q1. Binary Tree 2nd largest node
Ans. 
To find the 2nd largest node in a binary tree, we can perform an in-order traversal and keep track of the two largest nodes.
• Perform an in-order traversal of the binary tree

• Keep track of the two largest nodes encountered

• Return the second largest node when traversal is complete
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Q2. Basic web questions
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Q1. Team handling ability
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Q2. How to handle fast paced industry
Ans. 
To handle a fast-paced industry, prioritize tasks, delegate effectively, stay organized, and adapt quickly to changes.
• Prioritize tasks based on urgency and importance

• Delegate tasks to team members to ensure efficiency

• Stay organized with to-do lists, calendars, and project management tools

• Adapt quickly to changes in the industry by staying informed and being flexible
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Q1. How to create a team
Ans. 
Creating a team involves identifying goals, selecting team members, fostering communication, and promoting collaboration.
• Identify the goals and objectives of the team

• Select team members with diverse skills and strengths

• Foster open communication and encourage feedback

• Promote collaboration and teamwork

• Provide opportunities for team building activities

• Set clear expectations and roles for each team member
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Q2. How to manage team efficiently
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To manage a team efficiently, it is important to set clear goals, communicate effectively, delegate tasks, provide support, and recognize achievements.
• Set clear goals and expectations for each team member

• Communicate regularly and effectively with the team

• Delegate tasks based on team members' strengths and skills

• Provide support and resources to help team members succeed

• Recognize and reward achievements to motivate the t...read more
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Q1. Current position and offer
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Q2. How soon can you join?
Ans. 
I can join within two weeks of receiving an offer.
• I am currently in the process of wrapping up my current projects and can transition smoothly within two weeks.

• I have already informed my current employer about my intention to leave and they are supportive of my decision.

• I am excited about the opportunity to join your team and contribute to the company's success.

• I am flexible with my start date and can adjust based on t...read more
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Q1. Tell me about yourself
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Q2. Why did you wants join paytm
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Q3. What is your last experiance
Ans. 
I have 5 years of experience as a Team Manager Operations in a multinational company.
• Managed a team of 20+ employees and ensured smooth operations

• Developed and implemented strategies to improve productivity and efficiency

• Conducted regular performance evaluations and provided feedback to team members

• Collaborated with other departments to achieve company goals

• Handled customer complaints and resolved issues in a timely ma...read more
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Topics:-
Duration-1.5 hours
Kadane's Algorithm, Even Numbers at even index & odd at odd index, print out the second highest node of the tree

Q1. DSA ZigZag tree traversal OS Architecture of RAM Types of RAM Difference between compiler and interpreter What is a scheduler What is multithreading Disadvantages of FCFS and how can we use RoundRobin to ...read more
Ans. 
ZigZag tree traversal is a method to traverse a binary tree in a zigzag pattern.
• In ZigZag tree traversal, we visit the nodes of a binary tree in a zigzag pattern, moving from left to right and then right to left.

• We can use a stack or a queue to implement ZigZag tree traversal.

• The algorithm involves maintaining two stacks or two queues to keep track of the nodes at each level.

• We start with the root node and alternate be...read more
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2 questions. 1 was basic level. 2 was of medium level.

Q1. An ambiguous problem statement was given. Asking relevant questions revealed the problem to be largest island in a binary matrix. Was asked to code on an ide. And reduce space complexity to O(1).
Ans. 
Find the largest island in a binary matrix using O(1) space complexity.
• An island is defined as a group of connected 1s in the matrix.

• Use Depth-First Search (DFS) to explore the matrix and count the size of each island.

• Mark visited cells by changing 1s to 0s to avoid using extra space.

• Example: For matrix [[0,1,0],[1,1,0],[0,0,1]], the largest island size is 3.

• Iterate through each cell, and for each unvisited 1, initiate...read more
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Q2. Maximum sum path from root to leaf in an N-ary tree. Was asked to design an appropriate data structure. Then code the solution in O(n) time and O(1) space.
Ans. 
Find the maximum sum path from root to leaf in an N-ary tree using O(n) time and O(1) space.
• Define an N-ary tree node structure with a value and a list of children.

• Use a depth-first search (DFS) approach to traverse the tree.

• Keep track of the maximum sum encountered during the traversal.

• Example: For a tree with root 1, children [2, 3], and leaf nodes [4, 5], the max path is 1 -> 3 -> 5.
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Q1. Through discuss of projects. Methods used.
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Q2. First missing positive number in an array of integer in O(n) time O(1) space.
Ans. 
Find first missing positive number in an array in O(n) time and O(1) space.
• Traverse the array and mark the presence of each positive integer by changing the sign of the corresponding index.

• Traverse the array again and return the index of the first positive integer.

• If all integers are present, return the length of the array + 1.

• Example: [3, 4, -1, 1] => mark 3rd and 4th index as negative => return 2.

• Example: [1, 2, 0] =...read more
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Q3. Given an integer, print the relevant column name in an excel sheet. Ex: 1- A , 2-B.......... 26-Z , 27-AA, 28-AB........ Was asked code on an ide and test cases were given.
Ans. 
Given an integer, print the relevant column name in an excel sheet.
• Create a string array of alphabets from A to Z

• Use modulo operator to get remainder and divide by 26 to get quotient

• Append the corresponding alphabet to the result string

• Reverse the result string
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Q1. What are your salary expectations?
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