LinkedIn Softwaretest Engineer Interview Questions and Answers

DSA, puzzles, DBMS, OD, and networking

Q1. Describe binary tree
Ans. 
A binary tree is a hierarchical data structure in which each node has at most two children.
• Consists of nodes connected by edges

• Each node can have at most two children, referred to as left child and right child

• The left child is smaller than the parent node, while the right child is greater

• Used for efficient searching, sorting, and organizing data
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Q2. How to validate ip addres?
Ans. 
To validate an IP address, check if it consists of four numbers separated by periods, each number being between 0 and 255.
• Split the IP address string by periods to get an array of four numbers

• Check if the array length is 4

• Loop through each number in the array and check if it is between 0 and 255

• If any number is outside the valid range, the IP address is invalid
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Q1. What your opinion about job
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Q2. What you do if you get the job
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Q3. What are your qualification
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Q4. How much interest you pay in job
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Q5. What is the first thing you do after you get the job
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Leetcode hard 2 questions cat chicken problem

Q1. Leet code hard level questions
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Leetcode hard lld questions and mr round

You better prepare for dynamic programming

Q1. Dynamic programming langeuage
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Q2. What is the max sub array?
Ans. 
Max sub array refers to the contiguous subarray within an array that has the largest sum of elements.
• Max sub array problem is a common algorithmic problem in computer science.

• It involves finding the subarray with the largest sum of elements.

• Example: Given array [1, -2, 3, 4, -1, 2, 1, -5, 4], the max sub array is [3, 4, -1, 2, 1] with a sum of 9.
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Q1. Write a program to mirror the pixel in a screen matrix of 24 bit pixels
Ans. 
Program to mirror the pixel in a screen matrix of 24 bit pixels
• Create a 2D array to represent the screen matrix of pixels

• Iterate through each row and swap the pixels from left to right

• Ensure to handle the 24 bit pixels properly for mirroring

• Example: [[255, 0, 0], [0, 255, 0], [0, 0, 255]] -> [[0, 0, 255], [0, 255, 0], [255, 0, 0]]
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3 rounds of coding problems in c++ from various disciplines some relatively easy and some hard

Self introduction
About the software companies how to development

Q1. Explain the project details on college Why you intrest in this job
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