From 7e7b56db42ceb8d2b8973eae678fa4b58d5d3659 Mon Sep 17 00:00:00 2001 From: Jesse Luehrs Date: Wed, 13 May 2009 23:32:40 -0500 Subject: add old solutions --- 8.lua | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 8.lua (limited to '8.lua') diff --git a/8.lua b/8.lua new file mode 100644 index 0000000..486ffca --- /dev/null +++ b/8.lua @@ -0,0 +1,16 @@ +local number = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450" + +local max = 0 +local index = 1 +while true do + local str = number:sub(index, index + 4) + if str:len() < 5 then break end + local prod = str:sub(1, 1) * + str:sub(2, 2) * + str:sub(3, 3) * + str:sub(4, 4) * + str:sub(5, 5) + if prod > max then max = prod end + index = index + 1 +end +print(max) -- cgit v1.2.3