diff --git a/README.rst b/README.rst index 80551d9b..ca5eda02 100644 --- a/README.rst +++ b/README.rst @@ -93,7 +93,7 @@ Olivia's Project Euler Solutions | | Browser [#]_ | | |CodeQL| |br| | | | | | |ESLint| | +------------+----------------------------+--------+-------------------+ - | Lua | Lua 5+ [#]_ | 10 | |Luai| |br| | + | Lua | Lua 5+ [#]_ | 11 | |Luai| |br| | | | | | |LuaCheck| | +------------+----------------------------+--------+-------------------+ | Python | CPython 3.6+ |br| | 80 | |Python| |br| | diff --git a/docs/index.rst b/docs/index.rst index a7f50d2e..6fee236c 100644 --- a/docs/index.rst +++ b/docs/index.rst @@ -91,7 +91,7 @@ Problems Solved +-----------+-----------+------------+------------+------------+------------+------------+------------+------------+ |:prob:`007`|:c-d:`0007`|:cp-d:`0007`|:cs-d:`0007`| |:js-d:`0007`| |:py-d:`0007`|:rs-d:`0007`| +-----------+-----------+------------+------------+------------+------------+------------+------------+------------+ - |:prob:`008`|:c-d:`0008`|:cp-d:`0008`|:cs-d:`0008`|:ja-d:`0008`|:js-d:`0008`| |:py-d:`0008`|:rs-d:`0008`| + |:prob:`008`|:c-d:`0008`|:cp-d:`0008`|:cs-d:`0008`|:ja-d:`0008`|:js-d:`0008`|:lu-d:`0008`|:py-d:`0008`|:rs-d:`0008`| +-----------+-----------+------------+------------+------------+------------+------------+------------+------------+ |:prob:`009`|:c-d:`0009`|:cp-d:`0009`|:cs-d:`0009`|:ja-d:`0009`|:js-d:`0009`|:lu-d:`0009`|:py-d:`0009`|:rs-d:`0009`| +-----------+-----------+------------+------------+------------+------------+------------+------------+------------+ diff --git a/docs/src/lua/p0008.rst b/docs/src/lua/p0008.rst new file mode 100644 index 00000000..f51b2cef --- /dev/null +++ b/docs/src/lua/p0008.rst @@ -0,0 +1,16 @@ +Lua Implementation of Problem 8 +=============================== + +View source code :source:`lua/src/p0008.lua` + +Solution +-------- + +.. lua:function:: solution() + + :return: The solution to problem 8 + :rtype: number + +.. literalinclude:: ../../../lua/src/p0008.lua + :language: Lua + :linenos: diff --git a/lua/README.rst b/lua/README.rst index 5a05e85e..8a72f9b0 100644 --- a/lua/README.rst +++ b/lua/README.rst @@ -59,6 +59,7 @@ Problems Solved - ☒ `2 <./src/p0002.lua>`__ - ☒ `4 <./src/p0004.lua>`__ - ☒ `6 <./src/p0006.lua>`__ +- ☒ `8 <./src/p0008.lua>`__ - ☒ `9 <./src/p0009.lua>`__ - ☒ `17 <./src/p0017.lua>`__ - ☒ `28 <./src/p0028.lua>`__ diff --git a/lua/src/p0008.lua b/lua/src/p0008.lua new file mode 100644 index 00000000..ee12d4d6 --- /dev/null +++ b/lua/src/p0008.lua @@ -0,0 +1,73 @@ +-- Project Euler Problem 8 +-- +-- Problem: +-- +-- The four adjacent digits in the 1000-digit number that have the greatest +-- product are 9 × 9 × 8 × 9 = 5832. +-- +-- 73167176531330624919225119674426574742355349194934 +-- 96983520312774506326239578318016984801869478851843 +-- 85861560789112949495459501737958331952853208805511 +-- 12540698747158523863050715693290963295227443043557 +-- 66896648950445244523161731856403098711121722383113 +-- 62229893423380308135336276614282806444486645238749 +-- 30358907296290491560440772390713810515859307960866 +-- 70172427121883998797908792274921901699720888093776 +-- 65727333001053367881220235421809751254540594752243 +-- 52584907711670556013604839586446706324415722155397 +-- 53697817977846174064955149290862569321978468622482 +-- 83972241375657056057490261407972968652414535100474 +-- 82166370484403199890008895243450658541227588666881 +-- 16427171479924442928230863465674813919123162824586 +-- 17866458359124566529476545682848912883142607690042 +-- 24219022671055626321111109370544217506941658960408 +-- 07198403850962455444362981230987879927244284909188 +-- 84580156166097919133875499200524063689912560717606 +-- 05886116467109405077541002256983155200055935729725 +-- 71636269561882670428252483600823257530420752963450 +-- +-- Find the thirteen adjacent digits in the 1000-digit number that have the +-- greatest product. What is the value of this product? + +return { + solution = function() + string = ("73167176531330624919225119674426574742355349194934" + .. "96983520312774506326239578318016984801869478851843" + .. "85861560789112949495459501737958331952853208805511" + .. "12540698747158523863050715693290963295227443043557" + .. "66896648950445244523161731856403098711121722383113" + .. "62229893423380308135336276614282806444486645238749" + .. "30358907296290491560440772390713810515859307960866" + .. "70172427121883998797908792274921901699720888093776" + .. "65727333001053367881220235421809751254540594752243" + .. "52584907711670556013604839586446706324415722155397" + .. "53697817977846174064955149290862569321978468622482" + .. "83972241375657056057490261407972968652414535100474" + .. "82166370484403199890008895243450658541227588666881" + .. "16427171479924442928230863465674813919123162824586" + .. "17866458359124566529476545682848912883142607690042" + .. "24219022671055626321111109370544217506941658960408" + .. "07198403850962455444362981230987879927244284909188" + .. "84580156166097919133875499200524063689912560717606" + .. "05886116467109405077541002256983155200055935729725" + .. "71636269561882670428252483600823257530420752963450") + + local answer = 0 + + for i = 1,(string.len(answer)-13),1 + do + local product = 1 + for j = 0,12,1 + do + product = product * tonumber(string:sub(j, j)) + end + + if product > answer + then + answer = product + end + end + + return answer + end +} diff --git a/lua/test.lua b/lua/test.lua index 42e042af..27fc3a15 100644 --- a/lua/test.lua +++ b/lua/test.lua @@ -49,6 +49,7 @@ local problems = { ["p0002.lua"] = {4613732, false}, ["p0004.lua"] = {906609, false}, ["p0006.lua"] = {25164150, false}, + ["p0008.lua"] = {23514624000, false}, ["p0009.lua"] = {31875000, false}, ["p0017.lua"] = {21124, false}, ["p0028.lua"] = {669171001, false},