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github-actions[bot]andcclauss 3f0532a7b1 chore: refresh Hacktoberfest 2026 prep tracker (#15446 )

Co-authored-by: cclauss <cclauss@users.noreply.github.com>

2026-09-27 14:50:29 +02:00

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Hacktoberfest 2026 preparation — open PR cleanup tracker

This file tracks the cleanup of open pull requests ahead of Hacktoberfest 2026 so the queue is ready for the October influx of contributions.

Each of the scripts/close_pull_requests_with_*.sh jobs is run one at a time by a maintainer. After each run, the affected lines below are checked off ([ ] -> [x]), their labels replaced with "closed by <script name>", and the totals table at the bottom updated.

Snapshot taken: 2026-09-02 -- 918 open pull requests.

Latest refresh: 2026-09-06 -- reconciled the tracker with the live PR queue: 84 more tracked PRs are now resolved (10 merged: #13862, #13903, #14038, #14260, #14291, #14307, #14346, #14562, #14663, #15182; 74 closed). Approximately 669 pull requests remain open.

Notation: <index>. [ ] #<pr_id> <labels>

Open pull requests

#15158 merged
#15156 merged
#15147 closed
#15146 closed by maintainer
#15144 closed
#15142 closed
#15128 closed by close_pull_requests_with_failing_tests.sh
#15117 merged
#15108 merged
#15107 merged
#15105 merged
#15103 closed
#15102 closed
#15101 closed
#15092 merged
#15091 merged
#15090 merged
#15086 closed
#15084 merged
#15076 merged
#15074 closed
#15072 merged
#15063 merged
#15057 closed by close_pull_requests_with_failing_tests.sh
#15056 merged
#15055 merged
#15054 closed
#15053 closed
#15051 merged
#15050 closed
#15048 closed
#15047 closed
#15046 closed
#15045 closed
#15044 merged
#15043 closed
#15042 closed
#15041 closed
#15040 closed
#15039 closed
#15038 merged
#15036 closed
#15026 closed
#15025 closed by close_pull_requests_with_failing_tests.sh
#15024 closed
#15023 merged
#15021 closed by close_pull_requests_with_failing_tests.sh
#15019 closed
#15014 merged
#15012 merged
#15011 closed
#15010 closed
#15009 merged
#15005 closed
#15003 merged
#15001 closed
#14997 no labels
#14995 merged
#14991 merged
#14990 closed
#14988 merged
#14987 closed
#14986 merged
#14979 merged
#14975 closed by close_pull_requests_with_failing_tests.sh
#14974 closed by close_pull_requests_with_failing_tests.sh
#14973 closed by close_pull_requests_with_require_tests.sh
#14972 closed by close_pull_requests_with_failing_tests.sh
#14967 closed
#14939 merged
#14938 closed by close_pull_requests_with_failing_tests.sh
#14925 merged
#14923 closed
#14920 closed
#14914 closed
#14909 closed
#14907 merged
#14904 merged
#14899 closed
#14895 merged
#14894 merged
#14890 merged
#14889 merged
#14883 closed
#14882 closed
#14879 merged
#14878 closed
#14876 merged
#14875 merged
#14874 closed
#14873 closed
#14872 merged
#14871 closed
#14868 closed
#14864 closed
#14862 closed
#14861 closed
#14858 merged
#14856 merged
#14853 closed
#14851 merged
#14850 merged
#14848 merged
#14845 merged
#14843 closed
#14838 closed
#14835 closed by close_pull_requests_with_failing_tests.sh
#14833 merged
#14832 closed
#14829 closed
#14827 closed
#14826 closed
#14824 closed by close_pull_requests_with_require_type_hints.sh
#14823 closed
#14821 merged
#14819 closed
#14818 closed by close_pull_requests_with_failing_tests.sh
#14814 merged
#14812 closed
#14810 closed by close_pull_requests_with_require_type_hints.sh
#14807 merged
#14806 enhancement, awaiting reviews
#14805 merged
#14802 closed
#14801 closed
#14800 merged
#14798 closed
#14792 enhancement, awaiting reviews
#14787 enhancement, awaiting reviews
#14786 merged
#14785 closed
#14779 merged
#14777 enhancement, awaiting reviews
#14775 merged
#14770 merged
#14769 merged
#14768 merged
#14767 merged
#14759 closed
#14753 merged
#14751 closed
#14746 closed
#14743 merged
#14742 merged
#14740 closed
#14738 closed
#14736 closed
#14733 merged
#14732 closed by close_pull_requests_with_require_tests.sh
#14731 closed by close_pull_requests_with_failing_tests.sh
#14729 closed
#14728 merged
#14727 closed by close_pull_requests_with_failing_tests.sh
#14726 closed by close_pull_requests_with_require_type_hints.sh
#14724 closed
#14723 closed by close_pull_requests_with_failing_tests.sh
#14721 closed
#14718 closed
#14717 closed by close_pull_requests_with_failing_tests.sh
#14714 closed
#14713 closed
#14712 closed
#14708 closed
#14702 closed
#14701 merged
#14700 closed by close_pull_requests_with_failing_tests.sh
#14694 closed
#14690 closed by close_pull_requests_with_failing_tests.sh
#14685 merged
#14680 closed by close_pull_requests_with_failing_tests.sh
#14677 closed by close_pull_requests_with_require_descriptive_names.sh
#14673 closed
#14668 closed
#14665 merged
#14663 merged
#14660 closed by close_pull_requests_with_require_type_hints.sh
#14657 closed
#14655 closed
#14654 merged
#14652 merged
#14647 closed
#14641 merged
#14637 merged
#14635 merged
#14634 merged
#14633 merged
#14630 merged
#14627 closed
#14626 closed
#14625 closed by close_pull_requests_with_failing_tests.sh
#14623 merged
#14622 closed
#14618 closed by close_pull_requests_with_failing_tests.sh
#14617 closed by close_pull_requests_with_failing_tests.sh
#14616 closed by close_pull_requests_with_failing_tests.sh
#14613 closed
#14611 closed
#14610 closed
#14609 closed
#14608 closed
#14607 merged
#14602 merged
#14594 closed by close_pull_requests_with_failing_tests.sh
#14582 closed by close_pull_requests_with_require_tests.sh
#14581 enhancement, awaiting reviews
#14579 closed
#14574 closed
#14571 closed
#14570 closed
#14568 merged
#14563 closed
#14562 merged
#14560 merged
#14555 merged
#14554 merged
#14539 enhancement, awaiting reviews
#14527 awaiting reviews
#14526 awaiting reviews
#14525 awaiting reviews
#14524 closed by close_pull_requests_with_failing_tests.sh
#14523 closed
#14518 closed by close_pull_requests_with_failing_tests.sh
#14511 closed by close_pull_requests_with_failing_tests.sh
#14510 closed by close_pull_requests_with_failing_tests.sh
#14507 closed by close_pull_requests_with_failing_tests.sh
#14506 merged
#14504 closed
#14495 merged
#14492 awaiting reviews
#14486 closed by close_pull_requests_with_failing_tests.sh
#14482 merged
#14480 closed by close_pull_requests_with_failing_tests.sh
#14478 closed by close_pull_requests_with_require_tests.sh
#14477 closed
#14472 enhancement, awaiting reviews
#14468 closed by close_pull_requests_with_failing_tests.sh
#14460 merged
#14456 closed
#14455 closed by close_pull_requests_with_failing_tests.sh
#14440 closed
#14437 merged
#14436 no labels
#14432 merged
#14415 closed
#14414 merged
#14410 closed
#14409 enhancement, awaiting reviews
#14402 closed by close_pull_requests_with_require_type_hints.sh
#14398 enhancement, awaiting reviews
#14364 closed
#14363 closed
#14360 awaiting reviews
#14357 merged
#14352 closed by close_pull_requests_with_require_tests.sh
#14351 merged
#14346 merged
#14342 closed by close_pull_requests_with_require_tests.sh
#14336 closed by close_pull_requests_with_failing_tests.sh
#14332 closed by close_pull_requests_with_failing_tests.sh
#14331 closed by close_pull_requests_with_failing_tests.sh
#14321 closed by close_pull_requests_with_require_descriptive_names.sh
#14316 closed by close_pull_requests_with_require_type_hints.sh
#14314 closed by close_pull_requests_with_require_tests.sh
#14307 merged
#14304 closed by close_pull_requests_with_failing_tests.sh
#14303 closed by close_pull_requests_with_require_tests.sh
#14300 closed by close_pull_requests_with_failing_tests.sh
#14297 closed by close_pull_requests_with_failing_tests.sh
#14291 merged
#14290 closed by close_pull_requests_with_failing_tests.sh
#14286 closed by close_pull_requests_with_failing_tests.sh
#14285 closed by close_pull_requests_with_failing_tests.sh
#14284 closed
#14283 closed by close_pull_requests_with_failing_tests.sh
#14278 closed
#14277 closed
#14275 merged
#14272 closed by close_pull_requests_with_failing_tests.sh
#14270 closed by close_pull_requests_with_failing_tests.sh
#14269 closed by close_pull_requests_with_failing_tests.sh
#14264 no labels
#14262 enhancement, awaiting reviews
#14261 closed by close_pull_requests_with_failing_tests.sh
#14260 merged
#14256 closed by close_pull_requests_with_failing_tests.sh
#14239 no labels
#14237 merged
#14234 closed by close_pull_requests_with_failing_tests.sh
#14233 merged
#14229 merged
#14227 closed by close_pull_requests_with_failing_tests.sh
#14224 closed
#14221 closed
#14219 closed
#14216 closed
#14202 enhancement, awaiting reviews
#14197 enhancement, awaiting reviews
#14192 closed
#14190 no labels
#14188 closed
#14186 merged
#14185 closed by close_pull_requests_with_require_type_hints.sh
#14159 closed
#14158 merged
#14153 no labels
#14151 closed
#14143 merged
#14142 awaiting reviews
#14138 closed by close_pull_requests_with_require_type_hints.sh
#14134 closed
#14099 closed
#14098 closed by close_pull_requests_with_failing_tests.sh
#14096 closed by close_pull_requests_with_failing_tests.sh
#14095 merged
#14090 closed by close_pull_requests_with_require_type_hints.sh
#14089 no labels
#14088 closed by close_pull_requests_with_failing_tests.sh
#14086 closed by close_pull_requests_with_require_tests.sh
#14085 closed by close_pull_requests_with_failing_tests.sh
#14082 closed by close_pull_requests_with_require_descriptive_names.sh
#14080 closed by close_pull_requests_with_failing_tests.sh
#14079 closed
#14065 closed
#14061 closed by close_pull_requests_with_require_descriptive_names.sh
#14059 merged
#14058 enhancement, awaiting reviews
#14057 closed by close_pull_requests_with_failing_tests.sh
#14056 awaiting reviews
#14052 closed
#14051 closed
#14048 closed
#14045 closed by close_pull_requests_with_require_tests.sh
#14041 merged
#14040 closed by close_pull_requests_with_failing_tests.sh
#14038 merged
#14037 awaiting reviews
#14036 awaiting reviews
#14035 merged
#14034 closed by close_pull_requests_with_failing_tests.sh
#14032 closed
#14031 merged
#14030 awaiting reviews
#14029 merged
#14028 closed by close_pull_requests_with_require_descriptive_names.sh
#14027 closed by close_pull_requests_with_require_tests.sh
#14026 closed
#14023 no labels
#14022 closed by close_pull_requests_with_require_descriptive_names.sh
#14021 closed
#14019 closed by close_pull_requests_with_require_tests.sh
#14016 closed
#14015 closed
#14014 closed by close_pull_requests_with_require_type_hints.sh
#14009 merged
#14008 closed
#14004 closed by close_pull_requests_with_require_tests.sh
#14001 merged
#14000 closed by close_pull_requests_with_failing_tests.sh
#13994 closed
#13993 closed
#13991 closed
#13990 closed
#13989 closed by close_pull_requests_with_require_descriptive_names.sh
#13987 merged
#13984 closed
#13983 closed by close_pull_requests_with_failing_tests.sh
#13977 closed
#13973 awaiting reviews
#13972 merged
#13969 no labels
#13967 closed by close_pull_requests_with_failing_tests.sh
#13966 closed
#13964 closed
#13963 closed
#13962 closed
#13960 merged
#13958 closed by close_pull_requests_with_failing_tests.sh
#13955 closed
#13954 merged
#13950 closed
#13947 awaiting reviews
#13943 closed by close_pull_requests_with_failing_tests.sh
#13942 closed by close_pull_requests_with_failing_tests.sh
#13941 closed
#13938 no labels
#13935 closed by close_pull_requests_with_failing_tests.sh
#13934 closed
#13924 closed
#13916 closed by close_pull_requests_with_failing_tests.sh
#13915 closed
#13912 closed by close_pull_requests_with_require_descriptive_names.sh
#13911 closed
#13909 closed
#13907 closed
#13906 merged
#13903 merged
#13901 closed
#13900 closed
#13899 closed by close_pull_requests_with_failing_tests.sh
#13897 closed by close_pull_requests_with_failing_tests.sh
#13896 merged
#13894 closed
#13892 closed
#13891 merged
#13888 no labels
#13884 closed
#13883 closed by close_pull_requests_with_require_tests.sh
#13882 closed
#13880 closed
#13879 closed by close_pull_requests_with_failing_tests.sh
#13878 closed by close_pull_requests_with_failing_tests.sh
#13873 closed
#13869 closed
#13862 merged
#13850 merged
#13847 closed
#13843 closed
#13841 closed
#13839 closed by close_pull_requests_with_failing_tests.sh
#13836 closed
#13835 closed
#13831 merged
#13830 closed
#13827 merged
#13826 merged
#13825 closed
#13824 closed
#13823 closed by close_pull_requests_with_require_tests.sh
#13822 closed by close_pull_requests_with_require_tests.sh
#13818 closed
#13816 closed by close_pull_requests_with_failing_tests.sh
#13815 merged
#13814 no labels
#13810 closed by close_pull_requests_with_failing_tests.sh
#13808 closed
#13807 no labels
#13806 closed
#13802 closed
#13799 closed by close_pull_requests_with_failing_tests.sh
#13797 merged
#13791 closed
#13790 closed by close_pull_requests_with_failing_tests.sh
#13789 closed by close_pull_requests_with_failing_tests.sh
#13781 closed by close_pull_requests_with_require_tests.sh
#13774 closed by close_pull_requests_with_require_tests.sh
#13773 closed by close_pull_requests_with_require_type_hints.sh
#13772 closed by close_pull_requests_with_require_descriptive_names.sh
#13761 closed by close_pull_requests_with_require_tests.sh
#13758 closed
#13754 closed
#13753 merged
#13751 merged
#13750 closed
#13749 closed
#13746 closed by close_pull_requests_with_failing_tests.sh
#13745 closed by close_pull_requests_with_failing_tests.sh
#13744 closed
#13742 closed by close_pull_requests_with_require_tests.sh
#13738 no labels
#13737 closed
#13734 closed
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#13726 closed
#13718 merged
#13716 merged
#13712 closed by close_pull_requests_with_require_tests.sh
#13707 awaiting reviews
#13701 closed
#13699 merged
#13694 enhancement, awaiting reviews
#13691 closed by close_pull_requests_with_require_descriptive_names.sh
#13690 merged
#13688 merged
#13682 closed by close_pull_requests_with_require_type_hints.sh
#13681 merged
#13680 merged
#13679 closed by close_pull_requests_with_require_descriptive_names.sh
#13676 closed by close_pull_requests_with_require_descriptive_names.sh
#13675 closed by close_pull_requests_with_require_descriptive_names.sh
#13671 closed by close_pull_requests_with_failing_tests.sh
#13661 closed
#13658 closed by close_pull_requests_with_require_type_hints.sh
#13655 closed by close_pull_requests_with_require_tests.sh
#13653 closed by close_pull_requests_with_failing_tests.sh
#13648 closed
#13647 no labels
#13646 closed by close_pull_requests_with_failing_tests.sh
#13645 awaiting reviews
#13644 closed by close_pull_requests_with_require_type_hints.sh
#13641 closed
#13640 no labels
#13639 closed
#13637 merged
#13636 closed by close_pull_requests_with_require_type_hints.sh
#13635 closed
#13634 merged
#13631 merged
#13623 merged
#13619 merged
#13615 merged
#13609 closed
#13606 closed
#13605 closed by close_pull_requests_with_failing_tests.sh
#13604 closed
#13603 merged
#13601 closed
#13600 closed by close_pull_requests_with_require_tests.sh
#13597 closed
#13595 closed by close_pull_requests_with_failing_tests.sh
#13593 closed
#13589 merged
#13588 merged
#13586 closed
#13585 closed by close_pull_requests_with_failing_tests.sh
#13558 closed by close_pull_requests_with_failing_tests.sh
#13555 closed
#13554 closed
#13552 closed by close_pull_requests_with_failing_tests.sh
#13551 closed
#13550 merged
#13544 closed by close_pull_requests_with_failing_tests.sh
#13541 closed by close_pull_requests_with_failing_tests.sh
#13538 closed
#13536 closed by close_pull_requests_with_failing_tests.sh
#13535 merged
#13534 merged
#13531 closed
#13529 merged
#13528 merged
#13527 merged
#13526 closed by close_pull_requests_with_failing_tests.sh
#13523 closed by close_pull_requests_with_require_tests.sh
#13522 awaiting reviews
#13520 closed by close_pull_requests_with_failing_tests.sh
#13519 awaiting reviews, documentation
#13514 awaiting reviews
#13510 merged
#13506 closed by close_pull_requests_with_failing_tests.sh
#13502 closed
#13487 closed
#13485 closed by close_pull_requests_with_failing_tests.sh
#13484 merged
#13483 merged
#13482 awaiting reviews
#13475 merged
#13472 closed
#13471 awaiting reviews
#13469 closed
#13468 closed
#13462 awaiting reviews
#13457 closed by close_pull_requests_with_failing_tests.sh
#13452 closed
#13447 merged
#13426 merged
#13424 merged
#13421 closed
#13419 closed
#13418 closed
#13413 closed by close_pull_requests_with_require_descriptive_names.sh
#13410 closed
#13409 merged
#13402 merged
#13395 awaiting reviews
#13378 awaiting reviews
#13371 awaiting reviews
#13370 merged
#13369 merged
#13364 awaiting reviews
#13363 closed
#13361 awaiting reviews
#13360 enhancement, awaiting reviews
#13357 closed
#13355 merged
#13345 closed
#13343 merged
#13342 merged
#13341 merged
#13337 merged
#13334 merged
#13330 closed
#13327 awaiting reviews
#13325 merged
#13323 closed
#13322 merged
#13316 merged
#13312 awaiting reviews
#13300 awaiting reviews
#13297 no labels
#13296 closed
#13295 closed
#13288 merged
#13273 awaiting reviews
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#13252 closed
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#13249 awaiting reviews
#13239 closed
#13236 merged
#13234 awaiting reviews
#13231 merged
#13221 merged
#13219 merged
#13217 merged
#13216 awaiting reviews
#13208 closed
#13198 closed
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#13183 merged
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#13157 merged
#13149 merged
#13147 merged
#13146 merged
#13142 closed
#13141 awaiting reviews
#13136 closed
#13135 closed
#13133 merged
#13132 awaiting reviews
#13131 enhancement, awaiting reviews
#13129 awaiting reviews
#13128 merged
#13121 no labels
#13119 closed
#13118 closed
#13114 merged
#13113 awaiting reviews
#13112 closed
#13110 enhancement, awaiting reviews
#13106 closed
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#13102 merged
#13101 closed
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#13085 merged
#13071 closed
#13063 merged
#13055 merged
#13050 closed
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#13026 merged
#13023 awaiting reviews
#13022 merged
#13019 closed
#13018 merged
#13017 merged
#13016 merged
#13015 closed
#13014 merged
#13013 closed
#13012 closed
#13009 closed by close_pull_requests_with_failing_tests.sh
#13007 closed
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#13000 merged
#12999 merged
#12998 closed
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#12974 merged
#12956 closed by close_pull_requests_with_failing_tests.sh
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#12894 merged
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#12757 merged
#12756 merged
#12748 enhancement, awaiting reviews
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#12111 closed
#12109 closed by maintainer (superseded by #13146)
#12104 merged
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#9896 merged
#9880 merged
#9688 merged
#9686 closed
#9649 merged
#9645 merged
#9619 closed
#9610 closed
#9577 closed
#9535 merged
#9416 closed by maintainer (how-to-use, not an algorithm)
#9414 merged
#9388 merged

Closed totals

Script	PRs closed
`close_pull_requests_with_awaiting_changes.sh`	0
`close_pull_requests_with_failing_tests.sh`	94
`close_pull_requests_with_require_descriptive_names.sh`	14
`close_pull_requests_with_require_tests.sh`	24
`close_pull_requests_with_require_type_hints.sh`	15
Total	147

Open pull requests grouped by algorithm directory

Generated by examining the changed files of every open PR. Each PR appears in exactly one grouping. PRs touching more than one algorithm directory are under "Modifies multiple algorithm directories"; PRs touching only non-algorithm paths (e.g. .github/, scripts/, docs/) are under "Modifies no algorithm directories"; PRs that touch DIRECTORY.md without touching an algorithm directory are under "Modifies DIRECTORY.md".

Total open pull requests: 770

audio_filters:

#14979 merged

backtracking:

#10102 closed
#10662 closed
#11589 merged
#11980 closed
#13106 closed
#13198 closed
#13288 merged
#14364 closed
#14504 closed
#14568 merged
#14890 merged
#15001 closed
#15042 closed
#15055 merged
#15090 merged

bit_manipulation:

#9902 closed
#10370 closed
#11418 closed
#11827 closed
#12033 closed
#12042 closed
#13018 merged
#13121
#13129
#13132
#13157 merged
#13216
#13483 merged
#13484 merged
#13550 merged
#13737 closed
#13938
#13984 closed
#14495 merged
#14574 closed

blockchain:

#11699 merged
#11945 closed
#11946 merged
#12792 merged
#12999 merged
#13114 merged
#13296 closed
#13753 merged
#14237 merged

boolean_algebra:

#9917 closed
#13236 merged
#13701 closed
#13807
#14792

cellular_automata:

#12109 closed by maintainer (superseded by #13146)
#13146 merged
#13827 merged

ciphers:

#11785 merged
#12123 merged
#12319 closed
#12541 closed
#13100 closed
#13102 merged
#13147 merged
#13217 merged
#13421 closed
#13452 closed
#13825 closed
#13966 closed
#14414 merged
#14753 merged
#15108 merged

compression:

#11842 closed
#12392 closed

computer_vision:

#11429 merged
#12207 closed
#13334 merged
#13363 closed
#13538 closed
#13597 closed
#14143 merged
#14233 merged
#14668 closed
#14904 merged

control_algorithms:

#12648 closed

conversions:

#11113 merged
#11115 closed
#11213 merged
#11919 closed
#12209 merged
#12210 merged
#13295 closed
#13593 closed
#13634 merged
#13744 closed
#13808 closed
#13826 merged
#13831 merged
#14041 merged
#14079 closed
#14570 closed
#14571 closed
#14635 merged
#14871 closed
#14872 merged
#14879 merged

cpu_scheduling_algorithms:

#12140 closed

data_compression:

#14555 merged
#14743 merged
#14819 closed
#14873 closed

data_structures:

#9414 merged
#9645 merged
#9686 closed
#9880 merged
#9946 merged
#10474 closed
#10531 merged
#10607 merged
#11133 merged
#11199 closed
#11385 merged
#11547 closed
#11566 closed
#11607 closed
#11695 merged
#11822 merged
#11870 merged
#11886 closed
#11918 closed
#11924 closed
#12186 merged
#12271 merged
#12326 closed
#12498 closed
#12522 closed
#13019 closed
#13093 closed
#13112 closed
#13164 closed
#13191 closed
#13192 closed
#13322 merged
#13325 merged
#13327
#13345 closed
#13369 merged
#13370 merged
#13419 closed
#13468 closed
#13502 closed
#13589 merged
#13619 merged
#13661 closed
#13699 merged
#13802 closed
#14008 closed
#14009 merged
#14015 closed
#14026 closed
#14048 closed
#14186 merged
#14410 closed
#14492
#14527
#14712 closed
#14728 merged
#14775 merged

digital_image_processing:

#12275 closed
#13141
#13149 merged

divide_and_conquer:

#9688 merged
#12552 merged
#13300
#13519
#13738
#14095 merged
#14363 closed
#14925 merged

dynamic_programming:

#10382 closed
#11697 closed
#11712 closed
#11771 merged
#12066 merged
#13361
#13378
#13395
#13471
#13640
#13824 closed
#13973
#14440 closed
#14472
#14525
#14526
#14702 closed
#14856 merged

electronics:

#9535 merged
#9649 merged
#11727 closed
#12356 closed
#14031 merged
#14275 merged

financial:

#11368 closed
#11826
#11851 merged
#12357 merged
#12358 merged
#13888
#14506 merged
#15051 merged

fractals:

#12091 merged

full_wave_rectifier:

#9896 merged

genetic_algorithm:

#9577 closed
#13234
#13645
#13647

geodesy:

#11648 closed
#14351 merged
#15056 merged

geometry:

#11201 merged
#11205 merged
#12118 merged
#12980 closed
#13447 merged
#13690 merged
#13969
#14360
#15165 merged

graphics:

#13113
#13750 closed
#13751 merged
#13906 merged
#13909 closed
#14029 merged

graphs:

#11757 merged
#11820 closed
#11823 merged
#11875 merged
#11883 merged
#11897 merged
#11898 merged
#12056 merged
#12125 merged
#12281 closed
#12287 closed
#12526 closed
#12559 closed
#12616 closed
#12790 closed
#12881 merged
#13023
#13036 merged
#13249
#14718 closed
#14729 closed
#14894 merged
#15024 closed
#15072 merged
#15074 closed
#15102 closed
#15107 merged

greedy_methods:

#10860 merged
#11581 merged
#11667 merged
#14264
#14436

half_wave_rectifier:

#9388 merged

hashes:

#10017 merged
#11652 closed
#13814
#14023
#14035 merged
#14036
#14037
#14415 closed
#14560 merged
#14777
#14814 merged

haversine_calculation:

#13119 closed

height_tree:

#13172 closed

knapsack:

#10180 closed
#12896 closed

linear_algebra:

#12876 merged
#14647 closed
#14826 closed
#14827 closed
#15044 merged

linear_programming:

#14607 merged
#14613 closed
#15047 closed

machine_learning:

#9610 closed
#9619 closed
#10387 closed
#10800 merged
#11240 merged
#11250 merged
#11263 merged
#11567 closed
#11622 closed
#11671 closed
#11802 closed
#12111 closed
#12246 merged
#12262 merged
#12668 merged
#12700 closed
#12748
#12756 merged
#12767 merged
#12784 closed
#12976 closed
#13026 merged
#13085 merged
#13101 closed
#13105 closed
#13118 closed
#13208 closed
#13221 merged
#13270
#13271
#13273
#13337 merged
#13355 merged
#13357 closed
#13402 merged
#13410 closed
#13510 merged
#13522
#13555 closed
#13615 merged
#13635 closed
#13637 merged
#14016 closed
#14021 closed
#14065 closed
#14224 closed
#14579 closed
#14608 closed
#14637 merged
#14665 merged
#14733 merged
#14740 closed
#14800 merged
#14851 merged
#14853 closed
#14858 merged
#14874 closed
#14923 closed

maths:

#9927 merged
#10343 merged
#10466 merged
#11202 merged
#11211 closed
#11463 closed
#11509 merged
#11773 merged
#11784 merged
#11834 merged
#11848 merged
#11929 closed
#12104 merged
#12285 merged
#12344 merged
#12703 closed
#12757 merged
#12829 closed
#12830 merged
#12852 closed
#12875 merged
#12974 merged
#13017 merged
#13055 merged
#13063 merged
#13110
#13131
#13176 closed
#13251
#13252 closed
#13360
#13409 merged
#13426 merged
#13527 merged
#13528 merged
#13529 merged
#13535 merged
#13554 closed
#13588 merged
#13603 merged
#13623 merged
#13631 merged
#13648 closed
#13733 closed
#13749 closed
#13815 merged
#13818 closed
#13835 closed
#13850 merged
#13862 merged
#13882 closed
#13950 closed
#13990 closed
#13991 closed
#13993 closed
#13994 closed
#14001 merged
#14052 closed
#14059 merged
#14089
#14099 closed
#14134 closed
#14142
#14153
#14158 merged
#14190
#14202
#14216 closed
#14229 merged
#14239
#14409
#14539
#14554 merged
#14562 merged
#14563 closed
#14602 merged
#14633 merged
#14634 merged
#14652 merged
#14713 closed
#14724 closed
#14736 closed
#14742 merged
#14767 merged
#14768 merged
#14769 merged
#14779 merged
#14812 closed
#14845 merged
#14850 merged
#14864 closed
#14876 merged
#14889 merged
#14895 merged
#14988 merged
#14995 merged
#14997
#15014 merged
#15019 closed
#15038 merged
#15039 closed
#15048 closed
#15084 merged
#15103 closed
#15144 closed

matrix:

#12023 merged
#12555 merged
#12691 closed
#12940 merged
#13022 merged
#13187 closed
#13482
#13716 merged
#13934 closed
#13987 merged
#14821 merged
#15045 closed

networking_flow:

#13128 merged

neural_network:

#12082 merged
#12214 merged
#12421 closed
#13133 merged
#13514
#13680 merged
#13681 merged
#13718 merged

operating_system:

#11574 closed

os_py:

#13924 closed

other:

#11882 merged
#12413 merged
#12540 closed
#12834 closed
#13183 merged
#13462
#13907 closed

physics:

#9914 merged
#11580 merged
#11608
#11744 merged
#12129 merged
#12333 merged
#12335 merged
#12686 merged
#13002 closed
#13312
#13323 closed
#13341 merged
#13342 merged
#13343 merged
#13487 closed
#14030
#14357 merged
#14432 merged
#14437 merged
#14623 merged
#14787
#15012 merged

project_euler:

#10082 closed
#11164 closed
#11167 closed
#11174 closed
#11433 closed
#12684 merged
#12690 merged
#12694 merged
#12701 merged
#12706 merged
#12763 closed
#12764 merged
#12777 closed
#13013 closed
#13475 merged
#13531 closed
#13639 closed
#14694 closed
#14798 closed
#14801 closed
#14990 closed

quantum:

#10624 merged
#12317 merged
#13033 closed

recursions:

#12141 merged

scheduling:

#13896 merged

searches:

#10690 closed
#11825 closed
#12594 closed
#13609 closed
#13836 closed
#13841 closed
#13869 closed
#13891 merged
#13900 closed
#13901 closed
#13954 merged
#13955 closed
#14051 closed
#14056
#14159 closed
#14456 closed
#14523 closed
#14581
#14622 closed
#14626 closed
#14627 closed
#14641 merged
#14657 closed
#14708 closed
#14802 closed
#14806
#14807 merged
#14862 closed
#15005 closed
#15086 closed
#15091 merged
#15092 merged
#15101 closed

sorts:

#10271 closed
#11290 closed
#11552 merged
#11725 closed
#11752 closed
#11809 merged
#11910 closed
#11993 merged
#12012 closed
#12100 closed
#12295 merged
#12355 closed
#12593 closed
#12601 merged
#12696 closed
#13219 merged
#13316 merged
#13424 merged
#13534 merged
#13551 closed
#13641 closed
#13688 merged
#13758 closed
#13911 closed
#13960 merged
#13962 closed
#13963 closed
#13972 merged
#13977 closed
#14151 closed
#14398
#14460 merged
#14482 merged
#14609 closed
#14610 closed
#14701 merged
#14738 closed
#14746 closed
#14759 closed
#14785 closed
#14786 merged
#14805 merged
#14823 closed
#14829 closed
#14861 closed
#14868 closed
#14875 merged
#14882 closed
#14883 closed
#14899 closed
#14914 closed
#14920 closed
#14939 merged
#14967 closed
#14991 merged
#15003 merged
#15009 merged
#15011 closed
#15023 merged
#15026 closed
#15036 closed
#15040 closed
#15041 closed
#15050 closed
#15054 closed
#15063 merged
#15117 merged

strings:

#10234 merged
#10460 closed
#11092 closed
#11217 closed
#11475 merged
#11479 merged
#11556 closed
#11782 merged
#12133 merged
#12188 closed
#12206 closed
#12311 merged
#12839 closed
#12895 closed
#13014 merged
#13039 closed
#13297
#13371
#13601 closed
#13606 closed
#13694
#13707
#13941 closed
#13947
#14058
#14188 closed
#14219 closed
#14630 merged
#14654 merged
#14655 closed
#14673 closed
#14685 merged
#14721 closed
#14751 closed
#14770 merged
#14832 closed
#14833 merged
#14843 closed
#14848 merged
#14907 merged
#14909 closed
#15010 closed
#15043 closed
#15046 closed
#15053 closed

tests:

#13231 merged

triage:

#14611 closed

web_programming:

#11193 closed
#11655 merged
#13000 merged
#13016 merged
#13797 merged

Modifies multiple algorithm directories:

#10431 closed
#11153 closed
#11228 merged
#11653 closed
#11760 closed
#11805 closed
#11872 closed
#11885 closed
#12171 closed
#12259 closed
#12263 closed
#12412 closed
#12645 closed
#12723 closed
#12762 closed
#12942 closed
#12989 closed
#13007 closed
#13012 closed
#13015 closed
#13071 closed
#13090 closed
#13094 closed
#13136 closed
#13162 closed
#13364
#13418 closed
#13469 closed
#13734 closed
#13754 closed
#13791 closed
#13892 closed
#13894 closed
#13903 merged
#13915 closed
#14038 merged
#14192 closed
#14197
#14260 merged
#14262
#14277 closed
#14278 closed
#14284 closed
#14291 merged
#14307 merged
#14346 merged
#14477 closed
#14714 closed
#14838 closed
#14986 merged
#14987 closed
#15076 merged
#15147 closed

Modifies no algorithm directories:

#9982 closed
#10137 closed
#10631 closed
#11795 closed
#11928 closed
#12575 closed
#12894 merged
#12998 closed
#13038 closed
#13050 closed
#13135 closed
#13142 closed
#13178 closed
#13194 closed
#13330 closed
#13472 closed
#13586 closed
#13604 closed
#13726 closed
#13729 closed
#13806 closed
#13830 closed
#13843 closed
#13847 closed
#13873 closed
#13880 closed
#13884 closed
#13964 closed
#14032 closed
#14221 closed
#14663 merged
#14878 closed
#15105 merged
#15142 closed
#15180 merged
#15182 merged

Modifies DIRECTORY.md:

#13239 closed

Creates a new root directory

As requested by @cclauss on #15184: open PRs that add a new top-level directory to the repository (a directory that does not exist on master). These need a maintainer decision on whether the new category belongs in the collection before the code review matters, so they are grouped separately from the by-directory listing above. Each PR was confirmed to add at least one file under a top-level path that is absent from master.

Total PRs that create a new root directory: 13

compression:

#11842 closed
#12392 closed

control_algorithms:

#12648 closed

cpu_scheduling_algorithms:

#12140 closed

full_wave_rectifier:

#9896 merged

half_wave_rectifier:

#9388 merged

haversine_calculation:

#13119 closed

height_tree:

#13172 closed

operating_system:

#11574 closed

os_py:

#13924 closed

recursions:

#12141 merged

tests:

#13231 merged

triage:

#14611 closed

Open issues

Snapshot taken: 2026-09-06 -- 144 open issues (21 bug, 82 enhancement, 23 awaiting triage, 2 help wanted; issues can carry more than one label).

Same notation as the PR tracker: <index>. [ ] #<id> <labels>, checked off ([x]) once the issue is closed or resolved. See Triage recommendations below for a first pass at which of these we can close.

#15199 closed
#15187 no labels
#15085 closed
#15081 no labels
#15075 closed
#15071 closed
#15002 closed
#14998 closed
#14971 closed
#14970 closed
#14950 closed
#14898 closed
#14887 closed
#14886 closed
#14885 closed
#14881 closed
#14866 closed
#14844 closed
#14834 closed
#14817 closed
#14813 closed
#14773 closed
#14675 closed
#14649 closed
#14606 closed
#14593 closed
#14592 closed
#14591 closed
#14584 closed
#14577 closed
#14500 closed
#14479 closed
#14464 closed
#14425 closed
#14084 closed
#13999 closed
#13919 closed
#13918 closed
#13917 closed
#13905 closed
#13904 closed
#13861 closed
#13845 closed
#13844 closed
#13840 closed
#13760 closed
#13662 closed
#13656 closed
#13643 closed
#13612 closed
#13569 closed
#13546 closed
#13537 closed
#13516 closed
#13513 enhancement
#13509 closed
#13508 closed
#13501 closed
#13499 closed
#13488 closed
#13445 closed
#13432 closed
#13400 closed
#13396 closed
#13379 closed
#13372 closed
#13358 closed
#13326 closed
#13311 closed
#13304 closed
#13235 closed
#13226 closed
#13205 closed
#13203 closed
#13171 closed
#13116 enhancement
#13031 closed
#13029 closed
#13010 closed
#13008 closed
#12987 closed
#12970 closed
#12949 closed
#12943 closed
#12939 closed
#12867 closed
#12826 closed
#12775 closed
#12714 closed
#12622 closed
#12569 closed
#12513 closed
#12496 closed
#12495 closed
#12322 closed
#12321 closed
#12318 closed
#12306 closed
#12233 closed
#12218 closed
#12192 closed
#12142 closed
#12128 closed
#12127 closed
#12124 closed
#12108 closed
#12107 closed
#12069 closed
#12064 closed
#12043 closed
#11972 closed
#11947 closed
#11938 closed
#11894 closed
#11871 closed
#11844 closed
#11841 closed
#11837 closed
#11812 closed
#11756 closed
#11578 closed
#11534 closed
#11517 closed
#11316 closed
#11308 closed
#11225 closed
#10941 closed
#10837 closed
#10713 closed
#10703 closed
#10634 closed
#10563 closed
#8990 closed
#8847 closed
#8818 closed
#8785 closed
#8780 closed
#8083 closed
#8070 closed
#8067 closed
#7968 closed
#7854 closed
#6252 no labels
#6216 closed

Triage recommendations

A first pass at which open issues we can close, ordered by confidence. Grouped so a maintainer can act on a whole bucket at once. I verified each claim against the current master tree before listing it; where a claim depends on something I can't see (e.g. a rebuilt container), it's marked verify.

A. Close now — not a real issue / spam

#15002 "Sin gravedad" — spam. Body is an advertising link to an adult cam site, reports "Python 5.0", and attaches a video. No algorithmic content. Close and, if possible, report the author.

B. Close now — obsolete (target no longer in the tree)

#13226 "Inconsistent behavior for missing values in coordinate_compression.py" — the file data_structures/coordinate_compression.py no longer exists on master; the module the bug is about has been removed. Nothing left to fix.

C. Close as fixed/duplicate once the linked PR merges

#15085 "[BUG] jump_search raises IndexError for empty list input" — still reproduces on master, but a fix is already in the review queue: #14807 (canonical jump_search([]) -> -1 guard + doctest, which I've approved) with #15101 as a duplicate of it. Close #15085 as fixed the moment #14807 merges; no separate fix PR is needed.

D. Stale feature requests with no implementation ("please add algorithm X", ≥1 year, no PR)

These are standing "it would be nice to have …" requests that never produced a PR. They're not bugs and nothing in the tree depends on them; leaving them open makes the issue list look busier than the actual work. Recommend closing with a friendly "we'd still welcome a PR for this — closing to keep the tracker actionable; comment and we'll reopen" note. Candidates (all enhancement, 600–1500 days old, zero linked PR):

#8067 XGBoost classification/regression · #8083 caching algorithms · #11517 sliding window · #11578 genetic algorithm for function optimization · #11837 LZ78 compression · #11844 transposition cipher · #11938 travelling salesman · #11947 wildcard matching with FFT · #11972 Grover's search (Qiskit) · #12043 Edmonds' Blossom · #12064 elliptic-curve crypto · #12069 LSTM · #12107 hollow-diamond pattern · #12108 ridge regression · #12124 adaptive/"stalin" merge sort · #12128 TSP in graphs · #12218 set-matrix-zero · #12318 Shor's algorithm · #12321 ART1 net · #12322 RBFNN · #12496 "addition of AI algorithms" · #12569 collision detection · #12622 PID/ADRC · #12939 transitive closure

E. Likely already resolved — verify then close

#10941 "Container build failed in codespaces" and #11812 "DevContainer setup fails" — a working .devcontainer/ (Dockerfile + devcontainer.json + post_install) is present and current on master; both reports predate it. Verify a fresh Codespace build is green, then close.
#11841 "computer_vision README.md link not working" and #11225 "Misformatted/linked wiki entry in python sorting" — small doc-link reports; verify the referenced link resolves today and close if fixed.

F. Keep open — real, reproducible, and good contributor material

Confirmed still-live on master and each is a tidy, well-scoped fix (good good first issue candidates), so these should stay open:

#14950 radix_sort doesn't raise on negative input (verified: silently mis-sorts) · #14898 cyclic_sort infinite loop on invalid input · #14649 split wrong result for multi-character separators · #15071 Kahn's topo-sort pop(0)/sparse-id bug · #15075 matrix_exponentiation self-referential annotation NameError · #14584 run_simplex() returns {} instead of raising · #12192 topological sort returns reversed list · #12233 avoid log(0) in KL divergence.

I can take a second pass through the remaining awaiting triage items (relabel or route) once the buckets above are actioned — just say the word.

Automated statistics

Generated automatically by scripts/hacktoberfest_prep_update.py on 2026-09-27 (UTC).

Open issues: 10
Open pull requests: 88
Open PRs labelled awaiting reviews: 68
Days until Hacktoberfest (2026-10-01): 4
Issues to close per day to clear the backlog: 3 per day (over 4 days)
Pull requests to merge or close per day to clear the backlog: 22 per day (over 4 days)

Top three directories to work on (most open pull requests labelled awaiting reviews):

maths/ — 9 awaiting-reviews PRs
dynamic_programming/ — 8 awaiting-reviews PRs
sorts/ — 8 awaiting-reviews PRs

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