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35 lines
875 B
Python
35 lines
875 B
Python
# Video Explanation: https://www.youtube.com/watch?v=6w60Zi1NtL8&feature=emb_logo
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from typing import List
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def maximum_non_adjacent_sum(nums: List[int]) -> int:
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"""
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Find the maximum non-adjacent sum of the integers in the nums input list
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>>> print(maximum_non_adjacent_sum([1, 2, 3]))
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4
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>>> maximum_non_adjacent_sum([1, 5, 3, 7, 2, 2, 6])
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18
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>>> maximum_non_adjacent_sum([-1, -5, -3, -7, -2, -2, -6])
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0
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>>> maximum_non_adjacent_sum([499, 500, -3, -7, -2, -2, -6])
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500
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"""
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if not nums:
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return 0
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max_including = nums[0]
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max_excluding = 0
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for num in nums[1:]:
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max_including, max_excluding = (
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max_excluding + num,
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max(max_including, max_excluding),
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)
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return max(max_excluding, max_including)
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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