Visa SDE Interview Questions and Answers

Given 3 DSA medium level problems

One hour face to face round. Given system design problem of parking lot.

Q1. Description about project from resume
Ans. 
Developed a web application for online shopping
• Used HTML, CSS, and JavaScript for front-end development

• Implemented backend using Node.js and MongoDB

• Integrated payment gateway for secure transactions
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Q2. Lot of behavourial questions.
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Asked me to rewrite SQL in 20 minutes insanely tough and rude interviewer

3 Coding Questions of moderate level .

Q1. DBMS Project asked in deep.
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Q2. Basic codes to write e.g. Insertion , Deletion in Linkedlist
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Q3. As i haved added ML project. They go into algorithms detailed explanation.
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Q1. Ask Questions abt family background.
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Q2. Few more details about your future plan.
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Very easy online coding round

Q1. E mail classifier using ML
Ans. 
Email classifier using ML
• Use supervised learning algorithms like Naive Bayes or Support Vector Machines

• Preprocess email data by tokenizing, removing stop words, and stemming

• Split data into training and testing sets for model evaluation

• Evaluate model performance using metrics like accuracy, precision, recall, and F1 score
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Q2. What do you think about chatgot
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Round duration - 90 minutes
Round difficulty - Medium

Q1. 
Reverse Linked List Problem Statement
Given a singly linked list of integers, return the head of the reversed linked list.
Example:
Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed link...read more
Ans. 
Reverse a singly linked list of integers and return the head of the reversed linked list.
• Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.

• Use three pointers - prev, current, and next - to keep track of the nodes while reversing the linked list.

• Update the head of the reversed linked list as the last node encountered during reversal.
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Round duration - 60 minutes
Round difficulty - Medium

Round duration - 50 minutes
Round difficulty - Easy

1 easy question based on string and core subjects amd project related questions

It consist of 3 questions on hackerrank

Q1. Dont remember the exact it was related to array manipulation
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Q2. Dont remember the exact but it was string manipulation
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Q1. Basics of react
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Q2. Dsa questions on tree
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