IDP Education Limited Software Engineer Interview Questions and Answers

Q1. Question on Binary trees: if symmetric, easy string question using hashmap
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Q2. If we are hosting a live test how to show real time ranking, HLD for this and what algorithms can we use
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Q1. Database schema design for a feature where user can be free, gold, platinum.
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Q1. HLD for live rank dashboard for a live test where millions of users are doing test
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Q1. Polyfills and Logical
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Q2. List in react and the input box
Ans. 
Answer on how to list in react and the input box
• Use the map function to create a list in React

• Use the state to store the input value

• Use onChange event to update the state when the input value changes

• Use onSubmit event to handle the form submission
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Q1. Machine coding round design drivezy app. It should be demoable.
Ans. 
Design a Drivezy app for vehicle rental with user-friendly features and seamless booking experience.
• User Registration: Allow users to sign up using email or social media accounts.

• Vehicle Listing: Display available vehicles with images, descriptions, and pricing.

• Booking System: Implement a calendar for users to select rental dates and times.

• Payment Integration: Support multiple payment methods like credit cards, UPI, an...read more
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Q1. Add 2 linked list and return final linked list
Ans. 
Add 2 linked lists and return final linked list
• Create a new linked list to store the sum

• Traverse both linked lists simultaneously and add the corresponding nodes

• Handle carry over while adding nodes

• If one linked list is longer than the other, add the remaining nodes to the sum list
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Q2. Find a Element in rotated sorted array
Ans. 
Finding an element in a rotated sorted array.
• Use binary search to find the pivot point where the array is rotated.

• Determine which half of the array the target element is in.

• Perform binary search on that half of the array to find the target element.

• Handle edge cases such as when the target element is at the pivot point.
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Q1. Matrix chain multiplication
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Q2. Find word in matrix.
Ans. 
Given a matrix of characters and a word, find if the word exists in the matrix.
• Traverse the matrix and check if the first letter of the word matches any cell.

• If it does, check if the adjacent cells match the next letter of the word.

• Repeat until the entire word is found or no match is found.
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Q1. Stock buy sell problem to maximize profit.
Ans. 
Algorithm to maximize profit by buying and selling stocks.
• Iterate through the array of stock prices

• Keep track of the minimum price seen so far

• Calculate the profit if sold at current price

• Update maximum profit seen so far

• Return maximum profit
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Python technical SQL basic

Two dynamic programming challenges at the hard level on LeetCode and 10 medium-level SQL challenge.

Q1. Check if string is palindrome
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Q1. Major on Tech Stack , you are working on.
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Q1. Tell me about yourself
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Q2. Coding Question
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Q1. Tell me about yourself
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Q2. Salary discussion
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