Bubble sort: run MATLAB implementation and Markdown fixes (#350)

* Racket should be highlighted as Scheme.
* Missing quote for Ruby syntax highlighting directive
* Run code in MATLAB bubble sort implementation

Author: berquist

contents/bubble_sort/bubble_sort.md

@@ -21,7 +21,7 @@ This means that we need to go through the vector $$\mathcal{O}(n^2)$$ times with
 {% sample lang="py" %}
 [import:4-9, lang:"python"](code/python/bubblesort.py)
 {% sample lang="m" %}
-[import:11-23, lang:"matlab"](code/matlab/bubblesort.m)
+[import:1-13, lang:"matlab"](code/matlab/bubblesort.m)
 {% sample lang="hs" %}
 [import, lang:"haskell"](code/haskell/bubbleSort.hs)
 {% sample lang="cpp" %}
@@ -33,7 +33,7 @@ This means that we need to go through the vector $$\mathcal{O}(n^2)$$ times with
 {% sample lang="go" %}
 [import:7-21, lang:"golang"](code/go/bubbleSort.go)
 {% sample lang="racket" %}
-[import:6-19, lang:"racket"](code/racket/bubbleSort.rkt)
+[import:6-19, lang:"scheme"](code/racket/bubbleSort.rkt)
 {% sample lang="swift" %}
 [import:1-13, lang:"swift"](code/swift/bubblesort.swift)
 {% sample lang="ti83b" %}
@@ -84,13 +84,13 @@ Trust me, there are plenty of more complicated algorithms that do precisely the
 {% sample lang="go" %}
 [import, lang:"golang"](code/go/bubbleSort.go)
 {% sample lang="racket" %}
-[import, lang:"racket"](code/racket/bubbleSort.rkt)
+[import, lang:"scheme"](code/racket/bubbleSort.rkt)
 {% sample lang="swift" %}
 [import, lang:"swift"](code/swift/bubblesort.swift)
 {% sample lang="ti83b" %}
 [import, lang:"ti-83_basic"](code/ti83basic/BUBLSORT.txt)
 {% sample lang="ruby" %}
-[import, lang:ruby"](code/ruby/bubble.rb)
+[import, lang:"ruby"](code/ruby/bubble.rb)
 {% sample lang="crystal" %}
 [import, lang:"crystal"](code/crystal/bubble.cr)
 {% sample lang="php" %}

contents/bubble_sort/code/matlab/bubblesort.m

@@ -1,16 +1,6 @@
-function main()
-    array = floor( rand(1,7)*100 );
-    disp('Before Sorting:')
-    disp(array)
-
-    array = bubble_sort(array);
-    disp('After Sorting')
-    disp(array)
-end
-
-function sorted_array = bubble_sort(array)
-    for i=1:length(array)
-        for j=1:length(array)-i
+function sorted_array = bubblesort(array)
+    for i = 1 : length(array)
+        for j = 1 : length(array) - i
             if array(j) > array(j+1)
                 % swap elements in the list
                 temp       = array(j);
@@ -19,7 +9,17 @@ function main()
             end
         end
     end
-    sorted_array = array
+    sorted_array = array;
 end
 
+function main()
+    array = floor(rand(1, 7) * 100);
+    disp('Before Sorting:')
+    disp(array)
+
+    array = bubble_sort(array);
+    disp('After Sorting:')
+    disp(array)
+end
 
+main()

contents/bubble_sort/code/racket/bubbleSort.rkt

@@ -16,6 +16,6 @@
         [r (drop l 2)])
     (cond [(= (- n counter) 2) (cons (min x y) (cons (max x y) r))]
           [(cons (min x y) (pass  (cons (max x y) r) (+ counter 1) n))])))
-          
+
 
 ((lambda (x) (display (bubbleSort x))) (read))