Ixia Solutions System Engineer Interview Questions and Answers

Q1. Based on job description
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Q1. Some artchitecture questions
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Q1. Find anagrams in a sentence
Ans. 
Identify anagrams within a given sentence
• Split the sentence into individual words

• Compare each word to every other word to find anagrams

• Store anagrams in an array of strings
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Q2. Find lca of a binary tree
Ans. 
The lowest common ancestor (LCA) of a binary tree is the shared ancestor of two nodes farthest from the root.
• Start from the root and recursively search for the nodes in the left and right subtrees.

• If one node is found in the left subtree and the other in the right subtree, then the root is the LCA.

• If both nodes are found in the left subtree, then the LCA is in the left subtree. Same for the right subtree.

• Repeat the pro
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Q1. Find duplicates in a string
Ans. 
Use a hash set to find duplicates in a string efficiently.
• Create a hash set to store characters as you iterate through the string.

• If a character is already in the hash set, it is a duplicate.

• Return the duplicates as an array of strings.
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Q2. Find the sum of the digits in a reverse order
Ans. 
To find the sum of digits in reverse order, reverse the number and then add the digits together.
• Reverse the given number

• Separate each digit of the reversed number

• Add all the digits together to get the sum
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3 - 4 DSA questions from GeeksforGeeks

Q1. Describe OOPS concepts in java
Ans. 
OOPS concepts in Java are the principles of Object-Oriented Programming such as Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding th...read more
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Q2. DSA questions mostly easy to moderate
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Q1. Rotten oranges question can be found on leetcode
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Q1. Trie data structure implementation
Ans. 
Trie is a tree data structure used for efficient retrieval of key-value pairs.
• Trie is typically used for storing and searching strings efficiently.

• Each node in a trie represents a single character of a string.

• Trie allows for prefix search, making it useful for autocomplete features.

• Common operations on a trie include insertion, deletion, and search.

• Example: Trie data structure can be used to implement a dictionary with
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Q1. OOPS concepts is must .
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Q2. Basic java like super, this keywords etc
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Two basic DSA questions

Q1. How to reverse a string
Ans. 
To reverse a string, iterate through the characters and swap the first and last characters until reaching the middle.
• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet
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Q2. Oops concept questions
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Q1. How to add two numbers which are given as linked lists
Ans. 
To add two numbers given as linked lists, iterate through both lists simultaneously and keep track of carry.
• Iterate through both linked lists simultaneously

• Keep track of carry while adding digits

• Create a new linked list to store the result
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Q2. Project disscussion
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Q1. Tree qns on preorder and sort 0,1,2 qns
Ans. 
Preorder traversal is a type of tree traversal where nodes are visited in the order root, left, right. Sorting 0s, 1s, and 2s can be done using Dutch National Flag algorithm.
• Preorder traversal: Root, Left, Right

• Dutch National Flag algorithm can be used to sort 0s, 1s, and 2s efficiently
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Q2. Sliding window variation qn and a dp qn
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Talk about social media influence impact on chilfern