LokalApp YC startup || Round1 || SDE2
Summary
I cleared the Round 1 interview for an SDE2 role at LokalApp, a YC‑backed startup.
Full Experience
Problem 1st question - given an AP and one element is missing find the missing element. (Shared 3 approaches)
2nd question was - given a grid you can only move right or down find the number of ways to reach the end of the grid.
3rd question - Design a Data Structure, it was iterative approach based on requirements optimised the ds to O(1) reads and O(logn) writes.
Verdict - cleared
Interview Questions (3)
Find Missing Element in Arithmetic Progression
Given an arithmetic progression (AP) where exactly one element is missing, find the missing element.
Number of Paths in Grid with Right and Down Moves
Given a grid, you can only move right or down. Find the number of ways to reach the bottom‑right corner from the top‑left corner.
Design a Data Structure with O(1) Reads and O(log n) Writes
Design a data structure that supports O(1) read operations and O(log n) write operations, based on the provided requirements.