fix: correct recursive merge sort implementation - #1
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Fix broken indentation in the merge step, create the temporary buffer only once, and handle empty lists correctly by using low >= up as the recursive base case.
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I found some bugs in: sorting-algorithms/merge_sort_recursive.py
Fix broken indentation in the merge step, create the temporary buffer only once, and handle empty lists correctly by using low >= up as the recursive base case.
For comparison:
old: https://memory-graph.com/#codeurl=https://raw.githubusercontent.com/suresh-srivastava/data-structures-and-algorithms-in-python/refs/heads/main/sorting-algorithms/merge_sort_recursive.py×tep=0.2&play
new: https://memory-graph.com/#codeurl=https://raw.githubusercontent.com/bterwijn/data-structures-and-algorithms-in-python/refs/heads/main/sorting-algorithms/merge_sort_recursive.py×tep=0.2&play
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