WYO.in Software Developer Interview Questions and Answers

Simple DSA ques. and some mcqs. were easy if you are a cp guy

Q1. Given a string of paranthesis tell longest valid parantheisis
Ans. 
Use stack to keep track of indices of opening parentheses, update max length when closing parentheses found
• Use a stack to keep track of indices of opening parentheses

• When a closing parentheses is found, update max length by calculating the difference between current index and top of stack

• Handle edge cases like extra closing parentheses or unmatched opening parentheses

• Example: Input: "(()()", Output: 4 (for "()()")
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Q2. Leetcode 1443. This was exact ques
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Q1. Given a string find longest palindromeic substring
Ans. 
Find the longest palindromic substring in a given string.
• Use dynamic programming to check for palindromes within the string.

• Start by checking for palindromes of length 1 and 2, then expand to longer substrings.

• Keep track of the longest palindrome found so far.
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Q2. Simple take not take dp ques But my interviewer was an idiot she didn't understand shit She was reading editorial on the fly. As i told her approch she was like its wrong then read editorial and was fine. ...read more
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Q1. MC question on desing pattern
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Q2. Graph question, tree and hash
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Q3. Design Book my show
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Dp question of jump game

Q1. What is ambitionbox
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Q2. How many questions are there in that
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Q1. Same as above questions
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Q2. Same as above questions second one
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Q1. It was lld question to design a cab booking system.
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Q2. Tell me about yourself
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Q1. Binary search for closest element
Ans. 
Binary search to find the closest element in a sorted array
• Implement binary search to find the target element in the array

• Keep track of the closest element found so far while searching

• Update the closest element if a closer one is found during the search
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Q2. String manipulation
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Q1. Low level Design for an online e-commerce website
Ans. 
Low level design for an online e-commerce website involves designing the architecture and components of the website.
• Identify the main components such as user interface, database, payment gateway, product catalog, etc.

• Design the database schema to store user information, product details, orders, etc.

• Implement user authentication and authorization mechanisms for secure access.

• Integrate payment gateway for processing tran...read more
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Q1. Maximum Sum Subarray
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Q2. Insert node in binary search tree
Ans. 
To insert a node in a binary search tree, compare the value of the node to be inserted with the current node and traverse left or right accordingly.
• Start at the root node and compare the value of the node to be inserted with the current node.

• If the value is less than the current node, move to the left child node. If it is greater, move to the right child node.

• Repeat this process until reaching a leaf node, then insert ...read more
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DSA + JAVA + Spring boot

LLD (bookmyshow) + DSA