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Bogosort in lua #413

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Merged
merged 6 commits into from
Oct 3, 2018
Merged

Bogosort in lua #413

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7cb86e3
Added Bogosort
Gorzoid Oct 1, 2018
7c7e19f
Fixed code
Gorzoid Oct 1, 2018
2621bab
Added tests
Gorzoid Oct 1, 2018
9683001
Adding entry to bogo_sort.md
Gorzoid Oct 1, 2018
40272f3
Addressing changes
Gorzoid Oct 2, 2018
43c6e36
Remove unnecessary line specification
Gorzoid Oct 3, 2018
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4 changes: 4 additions & 0 deletions contents/bogo_sort/bogo_sort.md
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,8 @@ In code, it looks something like this:
[import:17-20, lang:"haskell"](code/haskell/bogoSort.hs)
{% sample lang="m" %}
[import:21-28, lang:"matlab"](code/matlab/bogosort.m)
{% sample lang="lua" %}
[import:1-22, lang="lua"](code/lua/bogosort.lua)
{% sample lang="cpp" %}
[import:33-38, lang:"c_cpp"](code/c++/bogosort.cpp)
{% sample lang="rs" %}
Expand Down Expand Up @@ -73,6 +75,8 @@ We are done here!
[import, lang:"haskell"](code/haskell/bogoSort.hs)
{% sample lang="m" %}
[import, lang:"matlab"](code/matlab/bogosort.m)
{% sample lang="lua" %}
[import, lang="lua"](code/lua/bogosort.lua)
{% sample lang="cpp" %}
[import, lang:"c_cpp"](code/c++/bogosort.cpp)
{% sample lang="rs" %}
Expand Down
28 changes: 28 additions & 0 deletions contents/bogo_sort/code/lua/bogosort.lua
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
local function shuffle(arr)
for i = 1, #arr-1 do
local rand = math.random(i,#arr)
arr[i], arr[rand] = arr[rand], arr[i]
end
end

local function issorted(arr)
for i = 1,#arr-1 do
if arr[i] > arr[i+1] then
return false
end
end
return true
end

function bogosort(arr)
while not issorted(arr) do
shuffle(arr)
end
end

local arr = {1, 45, 756, 4569, 56, 3, 8, 5, -10, -4}
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Does it ever finish with 10 elements? :)

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Do not underestimate the speed of lua, only takes 5 seconds on my slow laptop.

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Hahaha fair enough :D

print(("Unsorted array: {%s}"):format(table.concat(arr,", ")))

bogosort(arr)

print(("Sorted array: {%s}"):format(table.concat(arr,", ")))