Securonix SDE Interview Questions and Answers

Q1. Predict the winner leetcode problem
Ans. 
The winner leetcode problem involves finding the candidate with the most votes in an election scenario.
• Iterate through the list of candidates and keep track of their votes

• Return the candidate with the highest number of votes

• Example: Input - ['Alice', 'Bob', 'Alice', 'Charlie', 'Bob'], Output - 'Alice'
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Coding round has two questions ranging in medium -hard level leetcode questions

Q1. Doubly Linked List
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Q2. Graph - topological sort
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Q3. Operating system, database management system
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Q1. Longest Common Subsequence
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Longest Common Subsequence is the longest sequence of characters that appear in the same order in both strings.
• Use dynamic programming to solve this problem efficiently.

• Create a 2D array to store the lengths of longest common subsequences.

• Iterate through the strings to fill the array and find the longest common subsequence.
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Q2. Largest area in histogram
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The largest area in a histogram refers to the rectangle with the maximum area that can be formed within the histogram bars.
• Identify the largest rectangle that can be formed by considering each bar as a potential height and calculating the area based on the width of the rectangle.

• Use a stack data structure to efficiently find the largest area in a histogram by keeping track of the indices of the bars in non-decreasing o...read more
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Leetcode medium question

Q1. Technical coding
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Q2. Java basics questions were asked
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Q3. Basics of Unix and shell scripting
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DSA - 3 Coding Questions

Q1. Machine coding - low level design
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Q1. Write system design for cab booking system
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It had 9 uqestions , one problem solving , one SQL , one API and 6 mcq

Easy assignment , if you hav eOOps knowledge you can do it

Q1. What is state props drilling
Ans. 
State props drilling is the process of passing down props from a parent component to a deeply nested child component.
• Involves passing props through multiple levels of components

• Can lead to prop drilling if not managed properly

• Can be avoided by using context or Redux for state management
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Q2. Javascript tic tac toe
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Had online coding round as part of screening. Questions were easy and made it through but didn't hear back form the recruiter