KLA-Tencor Application Development Engineer Interview Questions and Answers

Hirepro , 2 easy to medium coding questions with technical questions

Q1. DSA questions were asked they were easy
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Q2. Insert a node at the middle of a linked list
Ans. 
To insert a node at the middle of a linked list, find the middle node and adjust pointers accordingly.
• Find the middle node using slow and fast pointers

• Adjust pointers to insert the new node at the middle
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Q1. Puzzle and general question
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Quantitative Questions
Computer Science core MCQ questions
2 Coding Questions

Q1. Explain Projects mentioned on resume
Ans. 
Developed a web application for tracking inventory and sales data
• Used React.js for front-end development

• Implemented RESTful APIs for backend using Node.js

• Utilized MongoDB for database management
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Q2. Questions based on Linked List
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Q1. Coding and testing questions
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Q1. Technology related
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Q1. Salary discussion
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Major questions were around problem solving, strings

Java theory questions and system questions with 2 DSA question

System design question with api designs

1 easy, 1 medium and 1 hard LC

Q1. 1. How will access files in a different server? 2. There are several files all containing similar key value pairs. The values differ in all files. How will you identify all the values that are same and ot...read more
Ans. 
To access files in a different server, use protocols like FTP or SSH. To identify similar key value pairs in multiple files, compare values using a script or tool.
• Use FTP or SSH protocols to access files in a different server

• Write a script or use a tool to compare key value pairs in multiple files

• Identify values that are the same and different across files

• Example: Use Python script to read files and compare key value p
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Round duration - 90 Minutes
Round difficulty - Medium

The timing was from 4:30 pm to 6 pm, so it was quite convenient. The platform was good, the only problem I had was while attempting diagram based questions, as the interface was difficult to understand. The test had three types of questions- MCQ, subjective and diagram based. The major topics from which the question were asked were- sequential circuits(sequence detector), static timing analysis, digital design and computer architecture.

Q1. 
City of Happy People Problem Statement
Imagine a city where the happiness of each resident is described by a numerical value. Ninja, who is visiting this city, is interested in forming groups of people su...read more
Ans. 
The problem is to find the number of ways to form a group of people such that the overall happiness of the group falls within a given range.
• Iterate through all possible subsets of the given array/list

• Calculate the sum of happiness values for each subset

• Count the number of subsets whose sum falls within the given range
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Round duration - 60 Minutes
Round difficulty - Medium

The timing for my interview was 9:30 pm and it went on for an hour. They asked me thorough questions from majorly two topics- CMOS and Digital System Design. Even if I was not able to answer certain questions,, they were happy to drop hints and then observed how I went further with the solution.

Q1. 
Wildcard Pattern Matching Problem Statement
Implement a wildcard pattern matching algorithm to determine if a given wildcard pattern matches a text string completely.
The wildcard pattern may include the...read more
Ans. 
The task is to implement a wildcard pattern matching algorithm that checks if a given wildcard pattern matches a given text.
• The wildcard pattern can include the characters '?' and '*'

• '?' matches any single character

• '*' matches any sequence of characters (sequence can be of length 0 or more)

• The matching should cover the entire text, not partial text

• Implement a function that takes the wildcard pattern and the text as inp...read more
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Basic C questions and microcontrollers

Leetcode Easy - mediums