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Simple dynamic solution in Speedy category for Stair Steps by nickie
def checkio(numbers):
p2 = p1 = 0
for x in numbers:
u = max(p2+x, p1+x)
p2, p1 = p1, u
return max(p1, p2)
#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')
Oct. 15, 2013
