Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct...

first round (30 min behavioral + 30 min coding) just 2 lp questions + 2-3 follow ups (it was ok) 1 easy-med low level design question (i did bad on this) I explained my approach towards this problem. When I was implementing, he told me that my approach...

For a given array remove the duplicates and sort them in ascending order Additional submission details: Test cases: same letter number etc Multiple parts or follow-ups: No

Assume you are given users in a video game, create and manage their inventory. Also, print all the inventory operations for the user : UserA added Apple*2 UserB added Banana*2

Given an m x n 2D binary grid grid which represents a map of '1's (land) and '0's (water), return the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edg...

HR screening round: Ask for my past experience and what i learnt from my undergrad.

Implement URL shortner

Microsoft SDE Interview Experience (2026) – Backend Coding Round Role: Software Engineer II (Backend) Round: Coding + LLD (60 minutes) Question: Design a Resilient Notification Dispatcher You are asked to design an in-memory notification service that...

Asked to build Chess game from scratch.

It gave sku units got from upstream, and have limited cache to store them. Basically it was LRU cache. Additional submission details: Test cases: Standard LRU cache test cases Multiple parts or follow-ups: Optimization, concurrency

Question: Minimum Time for Drone Delivery on a Circular Route Amazon has a circular network of m hubs labeled 1..m, where hub 1 is adjacent to hub m. A drone can move from any hub to either adjacent hub (clockwise or counterclockwise). You are given a ...

I recently interviewed for a Senior Software Engineer role at Capital One and received & accepted the offer. Here’s my interview experience: Online Assessment (HackerRank) Platform: HackerRank Format: 4 coding questions Difficulty: Easy to Medium The...



Did you get promoted during your tenure? Additional submission details: Test cases: Why Stripe and why are you leaving your current company Multiple parts or follow-ups: No

I recently discussed a classic iterator-merge problem: Problem Given two strictly sorted iterators, create a new iterator that returns all values in sorted order, while deduplicating values that appear in both iterators. Example Iterator 1: [2, 4, 6, 8...

Given two nodes in a binary tree, find the lowest common ancestor. Additional submission details: Test cases: Had to come up with my own Multiple parts or follow-ups: Yes, one follow up - one of the nodes can be ancestor of the other

Design a stack data structure that supports all standard stack operations while also allowing retrieval of the minimum element currently present in the stack. Implement the MinStack class with the following methods: MinStack() – Initializes an empty ...

Design excel sheet. Two main functions: set(cell, value/expression) print() -> should print both raw and computed values. Example: set(A1, "=5+9+-8") set(A2, "5") Only +,- and in case of -, + would be preceding which made it easier to split. This was t...

Phone screen questions Python Question - Merge Intervals LC SQL - 1) DAU ( AGGREGATIONS ON DATE, using date functions) 2) MAU - Rolling 28 day Additional submission details: Test cases: Na Multiple parts or follow-ups: yes

Tell me about a time when you were trying to understand a complex problem on your team and you had to dig into the details to figure it out. Who did you talk with or where did you have to look to find the most valuable information? How did you use that...

Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order. Additional submission details: Test cases: Example 1: Input: nums = [1,1,1,2,2,3], k = 2 Output: [1,2] Example 2: Input: nums = [...

Text Editor - https://leetcode.com/problems/design-a-text-editor/description/ Additional submission details: Test cases: leetcode test cases Multiple parts or follow-ups: yes .. 1. Add/ delete text 2. Cursor can move left and right and append text at t...

My Interview experience for OOLKA . There were 2 round's in round 1 they completely went through my resume and asked question's from my resume . In round 2 they asked me my current company System design and asked the tradeoff's of the same Verdict : Se...

Spreading infection problem

Project retrospective round This is after the coding phone screen Need us to pick a technically challenging project and prepare a set of reviews to discuss over the proect Got about 15mins to run over the project details and clarify context Interviewer...