Real Exams

For 2023

PayPal

• 1 Simulations
• 1 Optimized Simulations (prefix array)

PathAI

• 1 Simulations that had a bunch of edge cases (solved 9/10)
• 1 Optimized Simulations

Grammarly

• 1 Simulations
• 2 Optimized Simulations

Duolingo

• 1 multiple map problem (simple data analysis & processing)
• 1 path reduction problem (didn't have enough time)

LinkedIn

• 1 Optimized Simulations
• 1 Math-based Coding

Akuna Capital — "Front Runner"

• 1 Optimized Simulations
• Passed 5/8 test cases

DRW

• 2 Optimized Simulations
• 1 Greedy Algorithm

Akuna Capital Python

• 1 Optimized Simulations
• 1 text compression & Optimized Simulations
• 1, which seemed Greedy Algorithm (I didn't have the time to solve it)

Akuna Capital C++

• 10 multiple choice questions
  • required a deep understanding of C++ recent specs
• 1 Greedy Algorithm palindrome substring search
• 1 adjacency list construction and tree search.
  • Time limit was stringent, and I wasn't able to finish it
• 1 Optimized Simulations using bitwise operations
  • Time limit was stringent, and I wasn't able to finish it

Valkyrie Trading

• 1 binary tree construction & binary search traversal
• 1 Simulations

CodeSignal (HRT, Databricks)

• 2 Simulationss
• 2 Optimized Simulationss

IMC

• 1 BFS
• 1 Optimized Simulations

Garda Capital Partners

• 3 Math-based Coding problems (2 finding-formula, 1 map)
• 1 SQL Problem

BlackRock

• 1 stack
• 1 BFS

For 2022

Facebook

• 1 recursion
• 1 simple algorithm
• 1 Optimized Simulations

Coinbase

• 1 Math-based Coding
• 1 Optimized Simulations

Goldman Sachs

• 1 Math-based Coding
• 1 Optimized Simulations

Sezzle

• Get Job Done SQL, React, Python

Twitch

• Get Job Done Data Parsing

Bloomberg

• BFS