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⚡️ Speed up function matrix_sum by 50% #60

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⚡️ Speed up function matrix_sum by 50% #60

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3 changes: 2 additions & 1 deletion src/dsa/various.py
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,8 @@ def string_concat(n):


def matrix_sum(matrix: list[list[int]]) -> list[int]:
return [sum(matrix[i]) for i in range(len(matrix)) if sum(matrix[i]) > 0]
# Compute the row sum once, and include if > 0
return [row_sum for row in matrix if (row_sum := sum(row)) > 0]


def graph_traversal(graph: dict[int, dict[int]], node: int) -> dict[int]:
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