The phone screen question was LeetCode 230. The first onsite round is Leetcode 549. The second onsite round was to design a meeting scheduler. I also had a system design round where I was asked to design an online shopping cart, supporting many features. I nee...
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The coding question I got was: ``` Problem Description: You are given a 2D grid of lowercase letters with `m` rows and `n` columns, along with a target string `word`. Your task is to determine whether the given word can be found in the grid by selecting a sequ...
**My approach:** ```python import math class ConvexFunction: def __init__(self, func): self.func = func def evaluate(self, x: float) -> float: return self.func(x) class Solution: def __init__(self, func: ConvexFunction): self.func = func def minimize(self, a:...
## Currency Exchange – Maximum Conversion Rate ### Problem Overview You are given a collection of currency pairs along with their exchange rates (for example, `GBP → USD = 109.0`). Using this information, determine the **best possible exchange rate** from a so...
The coding question I got was: ```python def find_and_wrap_substrings(s, elements): words = s.split() result = [] for word in words: found = False for element in elements: index = word.find(element) if index != -1: result.append(word[:index] + "[" + element +...
I completed the online assessment (OA) on HackerRank, which required using a webcam. The phone screen involved two questions and a discussion on tradeoffs. **OA Question 1:** Jump Game Prime - A Hard dynamic programming problem. It was a variation of a frequen...
I was referred internally and felt lucky that the questions I got were standard interview questions. **Phone Screen:** I solved LeetCode 362 in 25 minutes. I spent another 10 minutes discussing tradeoffs, such as when to clear the queue, how to handle backgrou...
I was asked to write code to evaluate simple addition and subtraction expressions given as strings. The interviewer provided a few examples: "add(1,2)" -> 3 "sub(3,1)" -> 2 "add(1, sub(3,1))" -> 3 I chose to use backtracking. The first three characters determi...
#### Phone Screen The phone screen was an OOD / data structure design question. The problem was roughly: given a stream of visitor records, where each record contains a visitor name and a timestamp, design a system that can answer queries for a given timestamp...
I had two interview rounds. It seemed like coding wasn't the main focus; instead, the emphasis was on the case study and machine learning system design. **Round 1:** The interviewer presented a scenario where Uber Eats deliveries sometimes involve very remote,...
