# J

- [Jacobi symbol](/sidef-lang/programming_tasks/j/jacobi_symbol.md)
- [Jacobsthal numbers](/sidef-lang/programming_tasks/j/jacobsthal_numbers.md)
- [Jaro-Winkler distance](/sidef-lang/programming_tasks/j/jaro-winkler_distance.md)
- [Jaro similarity](/sidef-lang/programming_tasks/j/jaro_similarity.md)
- [Jensen's Device](/sidef-lang/programming_tasks/j/jensens_device.md)
- [Jewels and stones](/sidef-lang/programming_tasks/j/jewels_and_stones.md)
- [Jordan-Pólya numbers](/sidef-lang/programming_tasks/j/jordan-polya_numbers.md)
- [JortSort](/sidef-lang/programming_tasks/j/jortsort.md)
- [Josephus problem](/sidef-lang/programming_tasks/j/josephus_problem.md)
- [JSON](/sidef-lang/programming_tasks/j/json.md)
- [Julia set](/sidef-lang/programming_tasks/j/julia_set.md)