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22 lines
636 B
Python
22 lines
636 B
Python
from sys import maxsize
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def max_sub_array_sum(a: list, size: int = 0):
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"""
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>>> max_sub_array_sum([-13, -3, -25, -20, -3, -16, -23, -12, -5, -22, -15, -4, -7])
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-3
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"""
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size = size or len(a)
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max_so_far = -maxsize - 1
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max_ending_here = 0
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for i in range(0, size):
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max_ending_here = max_ending_here + a[i]
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max_so_far = max(max_so_far, max_ending_here)
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max_ending_here = max(max_ending_here, 0)
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return max_so_far
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if __name__ == "__main__":
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a = [-13, -3, -25, -20, 1, -16, -23, -12, -5, -22, -15, -4, -7]
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print(("Maximum contiguous sum is", max_sub_array_sum(a, len(a))))
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