Thumbtack Coding & Algorithms Interview Questions
Master your tech interview with our curated database of real questions from top companies.
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Thumbtack
Medium
Data ScientistImplement min, mean, median robustly
Implement three functions in Python without using numpy/pandas: (1) my_min(nums) returning the minimum in O(n) time and O(1) space; (2) my_mean(nums) ...
Coding & Algorithms
0
0
Oct 13, 2025
Thumbtack
Hard
Data ScientistDesign streaming new-vs-returning monthly metrics
Streaming design: Monthly NEW vs RETURNING request shares (event-time, with late/out-of-order and duplicates) Context You receive a high-volume event ...
Coding & Algorithms
0
0
Oct 13, 2025
Thumbtack
Medium
Data ScientistImplement TF–IDF with sparse matrices
Implement TF–IDF from Scratch (Python + NumPy/SciPy) You are given a list of documents (strings). Build a TF–IDF vectorizer from scratch with the foll...
Coding & Algorithms
0
0
Oct 13, 2025