Created
April 16, 2012 06:09
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Projecteuler #8
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num = 7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450 | |
numstr = str(num) | |
def product_of_str(str): | |
result = 1 | |
for char in str: | |
result = result * int(char) | |
return result | |
now_product = product_of_str(numstr[0:5]) | |
max_product = 1 | |
i=5 | |
while i < 1000: | |
if numstr[i] == '0': | |
now_product = 0 | |
i = i + 5 | |
elif numstr[i-5] == '0': | |
now_product = product_of_str(numstr[i-4:i+1]) | |
i = i + 1 | |
else: | |
now_product = now_product * int(numstr[i]) / int(numstr[i-5]) | |
i = i + 1 | |
if now_product > max_product: | |
max_product = now_product |
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