314,552 interview questions from 6,000+ companies.
Tests probability modeling skills using the binomial distribution for discrete outcomes.
Tests computation of correlation from joint probabilities and indicator variables.
Tests reasoning about distributions and threshold counts from summary statistics.
Tests knowledge of linear algebra properties relevant to data transformations and modeling.
Tests ability to apply calculus techniques used in probability and statistical modeling.
Tests understanding of permutation cycles and swap-count optimization.
Tests numerical methods understanding and efficient polynomial evaluation.
Tests core matching engine design, correctness, and performance considerations.
Tests ability to formulate and implement DP solutions correctly.
Tests data structure choice and stable duplicate removal logic.
Tests implementing domain-specific rounding rules without breaking trading constraints.
Tests systematic debugging, reading comprehension, and verification of fixes.
Tests implementing correct state transitions and command handling for order workflows.
Tests applying trading constraints to order placement logic for market making.
Tests understanding and maintaining object pool invariants and allocation accounting.
Tests DP reasoning for constrained subsequence selection.
Tests efficient array math and avoiding O(n^2) where possible.
Tests graph traversal fundamentals and combining BFS with ordering requirements.
Tests ability to design and implement a basic market making quoting strategy.
Tests combinational counting and constraint-based optimization.
24 total questions
