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...

I recently interviewed with Coinbase for Staff Software engineer role. Was able to do the CodeSignal OA test well but was still rejected. Online Screen(OA) Got a standard OA from CodeSignal. They have standard questions for this. This was easy to do bu...

Was rejected in the onsite round for Meta due to a coding round, rest were a strong hire Coding round #1 - Was asked a variation of sliding window and merge intervals Both pretty straightforward and interviewer was interested in my thought process rath...

Anyone recently gave Netflix tech screen? I was told it will be a live CodeSignal round with an engineer on the team but no other details.

DSA - Multiple LP questions Given list of numbers, you have choose numbers in such a way that if you choose x, you cannot choose x+1 or x-1, when you choose x, your score will be increased by value of that number * frequency of the number Tell me a tim...

Design a fully featured Google Docs clones Part1 :- It should able to sync the changes that we wrote in the doc Part2:- If user goes offline and come back online it should able to get tthe latest changes synced Part 3:- All userworking on same document...

💼 Offer Comparison – Dec 2025 Hi guys, Here’s a quick snapshot of my offers after ~2 years of experience (excluding internship). 📚 Profile Years of Experience: 1.9 Years + 27 Months Internship Education: Tier 2 College, B.Tech in Computer Sci...

Verdict: Selected ✅ Hi everyone! I’m thrilled to share that I’ve been selected for the Analyst role at Goldman Sachs. I wanted to document my entire experience here in the hope it helps someone else preparing for the same. 🧠 Round 1 – CoderP...

Questions about map reduce

You are given N sorted arrays. Find the k smallest elements across all arrays combined. Design an algorithm with time complexity better than O(N⋅k)

YOE: 7+ OA: DSA + few MCQs R1: 2 DSA problems - both are related to binary search R2: Top k elements R3: Efficiency comparision between different type of Lists in Java + HLD of BookMyShow R4: Past experience + HLD of Notification Service Outcome - Reje...

Implement a sliding window rate limiter (given no code/boilerplate) Additional submission details: Test cases: None Multiple parts or follow-ups: How would you design this at scale (for millions of users)? What would you do to your code before making a...

On CodeCraft (DoorDash), I was asked to implement a Dasher payroll calculator. In the interview, the task was to compute the dasher’s payout at the end of the day. There was a service that returns delivery times with timestamps for a given dasher, an...

find mode and medium given a distributed system

Given root of a tree and 2 numbers, find their lowest common ancestor,. Additional submission details: Test cases: null, non existent, both numbers on same subtree. Multiple parts or follow-ups: No