diff --git a/e0007/euler0007.jl b/e0007/euler0007.jl new file mode 100644 index 0000000..01bccbf --- /dev/null +++ b/e0007/euler0007.jl @@ -0,0 +1,36 @@ +#!/usr/bin/julia + +function euler007(n) + if n < 1 + return NaN + elseif n == 1 + return 2 + end + + primes = Array{Int64, 1}([]) + foundCount = 1 + number = 3 + + while foundCount < n + isPrime = true + for prime ∈ primes + if number % prime == 0 + isPrime = false + break + end + end + + if isPrime + push!(primes, number) + foundCount += 1 + end + + number += 2 + end + + return last(primes) +end + +euler007(1) + +@time euler007(10001) diff --git a/e0008/euler0008.jl b/e0008/euler0008.jl new file mode 100644 index 0000000..102d513 --- /dev/null +++ b/e0008/euler0008.jl @@ -0,0 +1,38 @@ +#!/usr/bin/julia + + +function euler008(longnumber, slicelength=12) + currentMaxProd = 0 + for i ∈ 1:(length(longnumber)-slicelength) + number = parse(Int, longnumber[i:(i+slicelength)]) + digitsProd = prod(digits(number)) + if digitsProd > currentMaxProd + currentMaxProd = digitsProd + end + end + + currentMaxProd +end + +euler008("1", 1) + +@time euler008("73167176531330624919225119674426574742355349194934" * + "96983520312774506326239578318016984801869478851843" * + "85861560789112949495459501737958331952853208805511" * + "12540698747158523863050715693290963295227443043557" * + "66896648950445244523161731856403098711121722383113" * + "62229893423380308135336276614282806444486645238749" * + "30358907296290491560440772390713810515859307960866" * + "70172427121883998797908792274921901699720888093776" * + "65727333001053367881220235421809751254540594752243" * + "52584907711670556013604839586446706324415722155397" * + "53697817977846174064955149290862569321978468622482" * + "83972241375657056057490261407972968652414535100474" * + "82166370484403199890008895243450658541227588666881" * + "16427171479924442928230863465674813919123162824586" * + "17866458359124566529476545682848912883142607690042" * + "24219022671055626321111109370544217506941658960408" * + "07198403850962455444362981230987879927244284909188" * + "84580156166097919133875499200524063689912560717606" * + "05886116467109405077541002256983155200055935729725" * + "71636269561882670428252483600823257530420752963450")