19 lines
542 B
Python
19 lines
542 B
Python
def flatten(arr: list) -> list:
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"""Flattens array"""
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return (
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flatten(arr[0]) + (flatten(arr[1:]) if len(arr) > 1 else [])
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if isinstance(arr, list) else [arr]
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)
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def sum_dict(arr: list[dict]) -> dict:
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"""Sums a list of dicts: [{a:3,b:3},{b:1}] -> {a:3,b:4}"""
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result = arr[0]
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for element in arr[1:]:
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for key in element.keys():
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if key in result:
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result[key] = result[key] + element[key]
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else:
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result[key] = element[key]
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return result
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