fix syntax of other and discrete_mathmatics

discrete_mathematics/euclidean_gcd.rb

@@ -1,16 +1,14 @@
 #https://en.wikipedia.org/wiki/Euclidean_algorithm
 
 def euclidean_gcd(a, b)
-    while b != 0 
-        t = b
-        b = a % b
-        a = t
-    end
-    return a
+  while b != 0
+    t = b
+    b = a % b
+    a = t
+  end
+  return a
 end
 
 puts "GCD(3, 5) = " + euclidean_gcd(3, 5).to_s
 puts "GCD(3, 6) = " + euclidean_gcd(3, 6).to_s
 puts "GCD(6, 3) = " + euclidean_gcd(6, 3).to_s
-
-

other/fisher_yates.rb

@@ -1,11 +1,11 @@
 # Fisher and Yates Shuffle is one of the simplest and most popular shuffling algorithm
 def fisher_yates_shuffle(array)
-    n = array.length
-    while n > 0 
-        i = rand(n-=1)
-        array[i], array[n] = array[n], array[i]
-    end
-    return array
+  n = array.length
+  while n > 0 
+    i = rand(n-=1)
+    array[i], array[n] = array[n], array[i]
+  end
+  return array
 end
 
 arr = [1, 2, 40, 30, 20, 15, 323, 12, 3, 4]