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GeezerVison is showing github.com — feat(strings): add suffix array algorithm by hasnain607 · Pull Request #15688 · TheAlgorithms/Python

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@hasnain607

@hasnain607 hasnain607 commented Nov 3, 2026

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Describe your change

  • Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
  • Documentation change?

Checklist

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
  • If this pull request resolves one or more open issues, then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".

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hasnain607 added 4 commits November 3, 2026 11:46
@hasnain607
feat(strings): add suffix array algorithm
40e7bfd
@hasnain607
style: format suffix array implementation
8be06b2
@hasnain607
docs: explain the non-obvious steps in suffix array
cacfbac
@hasnain607
docs: clarify the suffix array docstring
1e02eda
@algorithms-keeper algorithms-keeper Bot added the awaiting reviews This PR is ready to be reviewed label Nov 3, 2026
@hasnain607

hasnain607 commented Nov 4, 2026

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@mindaugl , @cclauss please review my PR, I know you guys must be busy for taking so long at responding to open PRs

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@cclauss

cclauss commented Nov 4, 2026

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What is the advantage over suffix trees?

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@hasnain607

hasnain607 commented Nov 4, 2026

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What is the advantage over suffix trees?

Thanks for the review! The main advantages are memory and simplicity. A suffix array stores one integer per suffix, while a suffix tree needs up to 2n nodes, each holding child pointers

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@hasnain607

hasnain607 commented Nov 6, 2026 •
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@cclauss @darkstar , I am very sorry for pinging you guys, but I am very excited for my first contribution if you will look into my PR please, tell me if I am missing out on something. Thanks for your time

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@richarddikembe-glitch

richarddikembe-glitch commented Nov 11, 2026

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add-suffix-array

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3 participants

@hasnain607 @cclauss @richarddikembe-glitch
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