Added GCD for Ruby, added change to README.md (thuva4#528)

irshadshalu · thuva4 · commit d666a684288a · 2017-11-02T09:08:44.000+05:30
* Added GCD for Ruby, added change to README.md

*  Added GCD, fixed in README and CONTRIBUTING
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -167,3 +167,4 @@ Unfortunately, sometimes the bug can be only reproduced in your project or in yo
 - [Suman Chaurasia](https://github.com/bzero0)
 - [Patrick Fischer](https://github.com/patFish)
 - [ServinDC](https://github.com/ServinDC)
+- [Irshad Ismayil](https://github.com/irshadshalu)
diff --git a/GreatestCommonDivisor/Ruby/GreatestCommonDivisor.rb b/GreatestCommonDivisor/Ruby/GreatestCommonDivisor.rb
@@ -0,0 +1,12 @@
+# GCD function
+def gcd(a, b)
+    if a % b == 0
+        b
+    else
+        gcd(b, a%b)
+    end
+end
+
+# Reading input
+a, b = gets.split.map(&:to_i)
+p gcd(a,b)
diff --git a/README.md b/README.md
@@ -32,8 +32,8 @@ Fibonacci | :+1: | :+1: | :+1: | :+1: | :+1: | :+1: |  :+1: | :+1: | :+1: | :+1:
 FisherYatesShuffle | :+1: |  |  |  | :+1: | :+1: |  | :+1: | :+1: |
 FloodFill Algorithm | :+1: | :+1: | | | | | | |
 Floyd'sAlgorithm | :+1: | :+1: |  |  | :+1: |  |  |  |
-Greatest Common Divisor | :+1: |:+1:| :+1: | :+1: | :+1: |   |  |:+1:  |
-Hamming Distance | :+1: | :+1: |  | :+1: |  | :+1: | :+1: |  | :+1: 
+Greatest Common Divisor | :+1: |:+1:| :+1: | :+1: | :+1: | :+1: | :+1: |:+1:  |
+Hamming Distance | :+1: | :+1: |  | :+1: |  | :+1: | :+1: |  | :+1:
 HeapSort | :+1: | :+1: |  |  | :+1: | :+1: | :+1: |  | :+1: | | | | :+1:
 Histogram equalization | :+1: |  |  |  |  |  |  |  |
 InsertionSort | :+1: | :+1: | :+1: | :+1: | :+1:  | :+1: | :+1: | :+1: | :+1:
