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* Replaced loops in jacobi_iteration_method function with vector operations. That gives a reduction in the time for calculating the algorithm.
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* added addAtPosition to simple linked list
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* Updated postfix_evaluation.py to support Unary operators and floating point numbers Fixes#8754 and #8724
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* use np.dot
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* Move and reimplement convert_number_to_words.py
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* Add doctests to continued_fraction.py for 0 and neg nums
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* fix: typo
#8770
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