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Data ScientistReturn the largest file size in a directory
Problem (Bash / File System) Implement a Bash function (or shell snippet) that returns the maximum file size (in bytes) under a given directory. Requi...
Coding & Algorithms
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0
Jan 17, 2026
Others
Easy
Data ScientistAnswer ancestor-walk queries on a rooted tree
Problem (Tree / Parent Array Queries) You are given a rooted tree with n nodes labeled 1..n, represented by a parent array par[1..n]: - par[i] is the ...
Coding & Algorithms
0
0
Jan 17, 2026
Others
Easy
Data ScientistCompute per-coin quarterly amounts and totals
Problem (SQL: Conditional Aggregation) You have two tables: coins - coin_id INT PRIMARY KEY - name VARCHAR transactions - id BIGINT PRIMARY KEY - coin...
Data Manipulation (SQL/Python)
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Jan 17, 2026