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Second solution in Clear category for Stair Steps by yukirin
def checkio(numbers):
steps = [0, numbers.pop(0)]
for n in numbers + [0]:
steps += [n + max(steps[-1], steps[-2])]
return steps[-1]
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')
April 12, 2015