American Express Kotlin Developer Interview Questions and Answers

Q1. They grind u in javascript,typescript
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Q2. Html css, angular
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Q3. Deep preparation needed
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Q1. Project Architecture
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Q1. Informatica tech questions
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Question Related to the DP and the Graph

Q1. Kth Max Element in a Array
Ans. 
Find the Kth maximum element in an array of strings.
• Sort the array in descending order.

• Return the element at index K-1.
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Q2. Coin Change and optimization through DP
Ans. 
Coin change problem can be solved using dynamic programming to find the minimum number of coins needed to make a certain amount of change.
• Use dynamic programming to build up solutions for smaller subproblems

• Start by initializing an array to store the minimum number of coins needed for each amount from 0 to the target amount

• Iterate through each coin denomination and update the array with the minimum number of coins need
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Q1. Project include in your Resume
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Q2. HR common question
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MCQ test consisting of 70 mcqs in 75 minutes from aptitude english and cs fundamentals. If cleared next paper 2 coding qs medium level

Q1. Two sum leetcode problem
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Q2. What problems you faced in your project
Ans. 
I faced challenges with integrating third-party APIs and debugging complex logic.
• Difficulty in understanding and implementing third-party APIs

• Issues with data synchronization between different systems

• Troubleshooting complex logic errors

• Managing dependencies and version conflicts

• Time constraints affecting problem-solving
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Q1. Project questions
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Q2. Spring related questions
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DP graphs strings it was good

Q1. Reverse a linkded list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, previous, and next

• Iterate through the list, updating pointers to reverse the direction

• Return the new head of the reversed list
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Q2. Print fibonacci series
Ans. 
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with two variables initialized to 0 and 1

• Loop through desired number of iterations, adding the previous two numbers to get the next number

• Print or store each number in the series
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Q1. Why do you want to switch
Ans. 
I want to switch to explore new technologies and challenges in a different industry.
• Interested in learning new skills and technologies

• Seeking new challenges and opportunities for growth

• Want to explore different industry perspectives
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Q2. Salry expectations
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Q1. Question on oop concepts
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Q2. Coding questions
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Asked about data structures

Asked about java programmes

Q1. Tell me about your self
Ans. 
I am a passionate software developer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Passionate about coding and problem-solving
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Q2. Are you ready to relocate
Ans. 
Yes, I am open to relocating for the right opportunity.
• I am willing to relocate for the right job opportunity that aligns with my career goals.

• I have experience moving for previous jobs and am comfortable with the process.

• I am excited about the possibility of exploring a new city or country and experiencing a different culture.
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