Karat Coding & Algorithms Interview Questions
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Karat
Medium
Software EngineerJoin tables to map userId to name
Problem You are given three tables represented as 2D string arrays (each row is a record, no headers). You need to produce a mapping from userId → cus...
Coding & Algorithms
0
0
Jan 22, 2026
Karat
Medium
Software EngineerValidate password and list rule violations
Problem You are given a password string p. Validate it against a set of rules and return all rules that the password violates. Rules 1. Length must be...
Coding & Algorithms
0
0
Jan 22, 2026