Merge pull request #1889 from saip7795/sp/power-x-n

 Create: 0050-power-x-n.rb

Author: tahsintunan

Diff for: ruby/0050-power-x-n.rb

@@ -0,0 +1,23 @@
+
+def my_pow(x, n)
+    solution = multiply(x, n.abs)
+
+    if n>=0
+        return solution
+    else
+        return (1/solution)
+
+    end
+end
+
+
+def multiply(x,n)
+    return 0 if x==0
+    return 1 if n==0
+    result = multiply((x*x),n/2)
+    if (n%2 ==1)
+        return (x * result)
+    else
+        return result
+    end
+end