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Single loop solution in Clear category for Stair Steps by kudinov.feodor
def checkio(numbers):
numbers = [0] + numbers + [0]
best = numbers[:2]
for i in range(2, len(numbers)):
best.append(max(numbers[i] + best[i - 2], numbers[i] + best[i - 1]))
return best[-1]
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio([5, -3, -1, 2]) == 6, 'Fifth'
assert checkio([5, 6, -10, -7, 4]) == 8, 'First'
assert checkio([-11, 69, 77, -51, 23, 67, 35, 27, -25, 95]) == 393, 'Second'
assert checkio([-21, -23, -69, -67, 1, 41, 97, 49, 27]) == 125, 'Third'
print('All ok')
Nov. 24, 2019
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