Applied Materials Senior Mechanical Design Engineer Interview Questions and Answers

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...read more
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Q1. Reserve Binary Search Tree
Ans. 
A Reserve Binary Search Tree (RBST) is a data structure that maintains sorted order and allows efficient insertion, deletion, and search operations.
• An RBST is a self-balancing binary search tree that ensures logarithmic height for efficient operations.

• Insertion and deletion operations are performed while maintaining the binary search tree properties.

• Example: Inserting values 10, 20, 30 in sequence will balance the tree...read more
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Major questions were around problem solving, strings

Q1. Add two linked list
Ans. 
To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.
• Create a dummy node to hold the result.

• Initialize current node to dummy node.

• Iterate through both lists, adding values and carry from previous addition.

• Move to next nodes in both lists.

• Handle cases where one list is longer than the other.

• Handle final carry if present.
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Q2. Find shortest path in graph
Ans. 
Use Dijkstra's algorithm to find the shortest path in a graph
• Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph

• Maintain a priority queue to keep track of the shortest distance to each node

• Update the shortest distance to each node as you traverse the graph

• Track the path by storing the previous node for each node visited
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Q1. Check tree is BST
Ans. 
Check if a binary tree is a Binary Search Tree (BST)
• Perform an in-order traversal of the tree and check if the resulting array is sorted

• Keep track of the previous node value during traversal to compare with the current node value

• Ensure that each node's value is greater than the previous node's value in the in-order traversal
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Q2. Check substring palindrome or not
Ans. 
Check if a substring in an array of strings is a palindrome or not.
• Iterate through each string in the array

• For each string, check if any of its substrings are palindromes

• Return true if a palindrome substring is found, false otherwise
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Q1. Reverse linked list recursively
Ans. 
Reverse a linked list recursively
• Create a recursive function to reverse the linked list

• Pass the current node and its next node as parameters

• Update the next pointer of the current node to point to the previous node
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Q2. Check if two stacks are equal
Ans. 
Check if two stacks are equal by comparing each element in the stacks
• Pop elements from both stacks and compare them one by one

• If the sizes of the stacks are different, they are not equal

• If any element in the stacks is different, they are not equal
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OOPS Principle.
SQL
Java Coding Round - with easy level of questions

Q1. Java language understanding
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Q2. Deep testing concept
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Q1. Dsa questions , angular , .net core and SQL
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