jwasham/coding-interview-university

A complete computer science study plan to become a software engineer.

362.5k stars · 84.9k forks

This repo isn't software code, so code checks are limited.

Caution

Caution: no human commits in a year, and most questions go unanswered.

Why

No human commits since December 2024, and only 0 of 16 recent issues got a maintainer reply. The repository holds mostly documentation, data or model files, so inactivity matters less than for a code library. (source 1, source 2, source 3, source 4)

What would change this

A release or merged commit from a maintainer, or replies to recent issues.

Maintenance

Complete

Dormant

Human commits, 30 days: 0
Human commits, 90 days: 0
Human commits, 365 days: 0
Bot share of commits, 365 days: 0%
Last commit: Dec 5, 2024 (1 year ago)
Last human commit: Dec 5, 2024 (1 year ago)
Authors, 90 days: 0
Last release: none found
Median PR merge time: 10 hours

Responsiveness: of 16 recent issues, 0% got a maintainer reply. Median first response: n/a.

No human commits in 365 days, and most issues go unanswered.

Sources: Commits, Releases, Merged pull requests, Issues

People

Complete

Owner: Personal account
Commits sampled: 100 since Nov 3, 2023
Authors for half of commits: 3
Authors for 80% of commits: 10
Contributors: 309

Top committers

jwasham: 28% of commits
NaoCoding: 19% of commits
abhijeetsatpute: 8% of commits
shaungunaw: 6% of commits
skyisuniverse: 5% of commits

No human commits in the last 365 days, so shares use the newest 100 commits back to 2023-11-03T15:22:24Z.

Sources: Commits, Contributors

Stars

Complete

Mostly organic, confidence high

Bars show stars gained each week. Orange bars overlap a burst.

Bursts

Oct 4, 2016 to Nov 4, 2016: about 16.9k more stars than usual, peak 4k in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Nov 8, 2016 to Nov 10, 2016: about 232 more stars than usual, peak 239 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Dec 15, 2016 to Jan 14, 2017: about 9.3k more stars than usual, peak 1.4k in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Mar 7, 2017 to Mar 10, 2017: about 560 more stars than usual, peak 208 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Mar 27, 2017 to Apr 5, 2017: about 1.1k more stars than usual, peak 232 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Dec 10, 2017 to Dec 28, 2017: about 4.2k more stars than usual, peak 1.3k in one day, a spike that tapers off. Outside explanation: a Hacker News post.
Apr 6, 2018 to Apr 9, 2018: about 266 more stars than usual, peak 141 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Apr 23, 2018 to May 3, 2018: about 1.5k more stars than usual, peak 509 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Jun 23, 2018 to Jun 25, 2018: about 188 more stars than usual, peak 119 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Oct 19, 2018 to Oct 21, 2018: about 129 more stars than usual, peak 112 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Dec 13, 2018 to Dec 19, 2018: about 286 more stars than usual, peak 115 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
Mar 11, 2019 to Mar 12, 2019: about 82 more stars than usual, peak 94 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Jul 22, 2019 to Aug 26, 2019: about 6k more stars than usual, peak 601 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Nov 20, 2019 to Nov 28, 2019: about 931 more stars than usual, peak 289 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
Jan 6, 2020 to Jan 8, 2020: about 412 more stars than usual, peak 246 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Feb 13, 2020 to Feb 14, 2020: about 121 more stars than usual, peak 100 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Feb 24, 2020 to Mar 3, 2020: about 1.8k more stars than usual, peak 657 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Mar 22, 2020 to Apr 25, 2020: about 6.9k more stars than usual, peak 593 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
May 6, 2020 to May 13, 2020: about 2k more stars than usual, peak 883 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Jul 5, 2020 to Jul 7, 2020: about 910 more stars than usual, peak 476 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Aug 2, 2020 to Aug 5, 2020: about 1.6k more stars than usual, peak 508 in one day, a flat block of stars. Outside explanation: a jump in issues and pull requests.
Aug 24, 2020 to Aug 29, 2020: about 1.5k more stars than usual, peak 394 in one day, a flat block of stars. Outside explanation: a jump in issues and pull requests.
Sep 14, 2020 to Sep 16, 2020: about 965 more stars than usual, peak 574 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Oct 12, 2020 to Oct 14, 2020: about 656 more stars than usual, peak 318 in one day, a flat block of stars. Outside explanation: a jump in issues and pull requests.
Oct 25, 2020 to Oct 30, 2020: about 1.3k more stars than usual, peak 481 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Nov 25, 2020 to Nov 25, 2020: about 379 more stars than usual, peak 443 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Dec 6, 2020 to Dec 12, 2020: about 1.3k more stars than usual, peak 535 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Dec 16, 2020 to Dec 23, 2020: about 3k more stars than usual, peak 993 in one day, a spike that tapers off. Outside explanation: a Hacker News post, a jump in issues and pull requests.
Mar 24, 2021 to Mar 25, 2021: about 525 more stars than usual, peak 495 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Apr 2, 2021 to Apr 15, 2021: about 3.5k more stars than usual, peak 706 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Apr 19, 2021 to Apr 22, 2021: about 1.4k more stars than usual, peak 593 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
May 5, 2021 to May 12, 2021: about 1.7k more stars than usual, peak 547 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
May 26, 2021 to Jun 7, 2021: about 3.4k more stars than usual, peak 711 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Jul 21, 2021 to Jul 30, 2021: about 3k more stars than usual, peak 445 in one day, a flat block of stars. Outside explanation: a jump in issues and pull requests.
Sep 15, 2021 to Sep 20, 2021: about 1.1k more stars than usual, peak 477 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Nov 21, 2021 to Nov 23, 2021: about 400 more stars than usual, peak 212 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Nov 26, 2021 to Dec 2, 2021: about 745 more stars than usual, peak 223 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
Jan 20, 2022 to Jan 28, 2022: about 1.4k more stars than usual, peak 285 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Feb 3, 2022 to Feb 10, 2022: about 1.8k more stars than usual, peak 407 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
May 23, 2022 to May 25, 2022: about 489 more stars than usual, peak 242 in one day, a flat block of stars. No outside explanation found, so this burst is unexplained.
Jul 1, 2022 to Jul 10, 2022: about 918 more stars than usual, peak 213 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Sep 16, 2022 to Sep 18, 2022: about 684 more stars than usual, peak 580 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Oct 31, 2022 to Nov 7, 2022: about 1.1k more stars than usual, peak 237 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Jan 6, 2023 to Jan 11, 2023: about 1.3k more stars than usual, peak 525 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Feb 19, 2023 to Mar 2, 2023: about 2k more stars than usual, peak 581 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Jun 12, 2023 to Jun 13, 2023: about 181 more stars than usual, peak 215 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Jul 16, 2023 to Jul 17, 2023: about 178 more stars than usual, peak 178 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Sep 23, 2023 to Oct 6, 2023: about 2.8k more stars than usual, peak 1.2k in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Nov 21, 2023 to Nov 27, 2023: about 773 more stars than usual, peak 248 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Jan 11, 2024 to Jan 12, 2024: about 183 more stars than usual, peak 216 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Jan 22, 2024 to Jan 25, 2024: about 339 more stars than usual, peak 193 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Mar 1, 2024 to Mar 2, 2024: about 159 more stars than usual, peak 185 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Apr 2, 2024 to Apr 7, 2024: about 689 more stars than usual, peak 248 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Apr 14, 2024 to Apr 26, 2024: about 6.9k more stars than usual, peak 2k in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
May 21, 2024 to May 24, 2024: about 809 more stars than usual, peak 433 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Jun 21, 2024 to Jun 26, 2024: about 495 more stars than usual, peak 248 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Dec 28, 2024 to Jan 2, 2025: about 577 more stars than usual, peak 238 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Apr 19, 2025 to Apr 28, 2025: about 1.6k more stars than usual, peak 376 in one day, a shape we can't classify. No outside explanation found, so this burst is unexplained.
Jun 3, 2025 to Jun 9, 2025: about 822 more stars than usual, peak 340 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Jun 12, 2025 to Jun 13, 2025: about 635 more stars than usual, peak 470 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Aug 28, 2025 to Sep 8, 2025: about 1.2k more stars than usual, peak 281 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Sep 17, 2025 to Sep 20, 2025: about 1.2k more stars than usual, peak 749 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
Sep 26, 2025 to Sep 27, 2025: about 218 more stars than usual, peak 270 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Nov 5, 2025 to Nov 8, 2025: about 519 more stars than usual, peak 294 in one day, a spike that tapers off. We couldn't check for an outside explanation.
Mar 30, 2026 to Apr 10, 2026: about 2.1k more stars than usual, peak 819 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Apr 22, 2026 to May 8, 2026: about 4.3k more stars than usual, peak 695 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Jun 1, 2026 to Jun 9, 2026: about 2.5k more stars than usual, peak 696 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
Jun 13, 2026 to Jun 23, 2026: about 1.7k more stars than usual, peak 469 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.
Sep 21, 2026 to Sep 21, 2026: about 239 more stars than usual, peak 308 in one day, a spike that tapers off. We couldn't check for an outside explanation.

25 stars GitHub has since removed (tracked since Oct 13, 2026).

Anyone can buy stars for any repo; bursts alone don't prove the owner did.

Some star bursts have no matching forks, issues, releases, or launch coverage.
Anyone can buy stars for any repo, so this describes the star history only.
Engagement is not compared for non-code or mirror repositories.

Sources: How star history is analyzed

Risk

Complete

Flags

Info: The OpenSSF Scorecard for this project is 3.4 out of 10 (deps.dev). Details

License

Now: No license found
A year ago: Not known

Packages

No published packages found.

OpenSSF Scorecard: 3.4 out of 10 (via deps.dev).

Sources: GitHub: jwasham/coding-interview-university

Badge

Add this to a README to show the current verdict:

[![RepoRadar](https://reporadar.ai/jwasham/coding-interview-university/badge.svg)](https://reporadar.ai/jwasham/coding-interview-university)

Earlier verdicts

Oct 14, 2026: Caution
Oct 13, 2026: Caution
Oct 13, 2026: Caution

Computed 20 hours ago · method 2026.10.2