Added Sum of Squares Lagrange's Four Square algorithm implementation (#6583)

* Add Sum of Squares algorithm implementation

* Format code and add Wikipedia URL for Lagrange's theorem

* Fixed clang-format issues

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Co-authored-by: Oleksandr Klymenko <alexanderklmn@gmail.com>

Sriram kulkarni committed 7mo ago

d8ddb07b7e360cf2bd6efe44f339165f180a3a1a

Parent: 15695c6

Committed by GitHub <noreply@github.com> on 10/2/2025, 7:44:36 AM