Add Ruby solution for Day 24 problem (#191)

* Add @aaditkamat as a contributor

* Add Ruby code for Day 1: FizzBuzz problem

* Add Ruby code for Day 2: String reverse problem

* Update README.md for Day 2

* Modify Ruby code and README

* Add condition for nil and wrong type edge cases

* Add a seperate Ruby source code file for palindrome

* Modify code for reverse.rb

* Add seperate palindrome and reverse code sections in README

* Update gitignore

* Refactor palindrome.rb and rename heading in README

* Add solution for Day 3: Hamming Problem

* Add condition for strings of unequal lengths

* Update README

* Change project name and owner in.all-contributorsrc

* Remove merge conflict lines

* Add @shivank86 as a contributor

* Add C++ files for different patterns

* Add author and date comments at the top of C++ files

* Update README.md

* Add solution for Day 6 Problem in Python

* Update README

* Refactor code files

* Modify string representation of output in python files

* Add Ruby solutions for Day 6 problem

* Update README for Ruby code

* Add first version of solutions for Day 7 problem in C++, Java & Ruby

* Modify solutions

* Update Day 7 README

* Remove merge conflicts from CONTRIBUTORS.md

* Add back removed lines in CONTRIBUTORS.md

* Add code sections contributed by @imkaka to day 6 README

* Update README.md

* Add C++ solution

* Add Day 8 solution in C++

* Add Day 8 solution in Java

* Add Day 8 solution in Ruby

* Add Day 8 solution in Python

* Add credits at the top of the code

* Update README

* Update C++ implementation

* Update Python implementation

* Add solution for Day 10: String Permutation Problem in Python

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Update Day 10 README

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Change heading in README and remove empty directory in day 9

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Update README.md

* Add Ruby solutions for Day 13

* Update README

* Add credits to the code

* Add Python solution for Day 13

* Update Day 13 README

* Update fibonacci.py

* Modify Fibonacci python code section in day 13 README

* Add Ruby solution to Day 16 problem

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Update Day 16 README with Ruby implementation

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Change wording of print statement

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Add Python solution to Day 17 problem

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Add Python implementation to Day 17 README

Signed-off-by: Aadit Rahul Kamat <aadit.k12@gmail.com>

* Add solution to Day 18 Question A: Frequency Counter

* Add solution to Day 18 Question B: Count Uniques

* Add solution to Day 18 Question C: Check Power N

* Update day 18 README with personal Python solution

* Update check_power_n.py

* Update count_uniques.py

* Add Python implementation for Day 19 and update Day 18 solutions

Signed-off-by: Halid Altuner <aadit.k12@gmail.com>

* Add CMakeLists.txt to gitignore

Signed-off-by: Aadit Kamat <aadit.k12@gmail.com>

* Add Ruby Solution to day 24 problem

Signed-off-by: Aadit Kamat <aadit.k12@gmail.com>

* Add Ruby solution to day 24 README

Signed-off-by: Aadit Kamat <aadit.k12@gmail.com>

Author: Aadit Kamat

.gitignore

@@ -1,3 +1,4 @@
+CMakeLists.txt
 node_modules/
 playground/
 youtube/

day24/README.md

@@ -58,4 +58,50 @@ function isRotation (arr1, arr2) {
 console.log (isRotation ([1, 2, 3, 4, 5, 6, 7], [4, 5, 6, 7, 1, 2, 3]));  // true
 console.log (isRotation ([1, 2, 3, 4, 5, 6, 7], [7, 1, 2, 3]));  // false
 console.log (isRotation ([1, 2, 3, 4, 5, 6], [6, 5, 4, 3, 2, 1]));  // false 
+```
+
+## Ruby Implementation
+
+### [Solution](./Ruby/circular_rotation.rb)
+
+```ruby
+=begin
+@author: aaditkamat
+@date: 22/01/2019
+=end
+
+def check_rotation(first, second)
+  if first.length != second.length
+    return false
+  end
+  i = 0
+  curr = second.index(first[0])
+  if curr == nil
+    return false
+  end
+  i += 1
+  curr = (curr + 1) % (first.length)
+  until i >= second.length
+      if first[i] != second[curr]
+        return false
+      end
+      i += 1
+      curr = (curr + 1) % (first.length)
+  end
+  true
+end
+
+def parse_input_array()
+  gets.chomp!.gsub(/\]|\[/, '').split(',').map{|s| s.to_i}
+end
+
+def main
+  print "Enter the first array: "
+  first = parse_input_array()
+  print "Enter the second array: "
+  second = parse_input_array()
+  puts check_rotation(first, second)
+end
+
+main
 ```

day24/Ruby/circular_rotation.rb

@@ -0,0 +1,39 @@
+=begin
+@author: aaditkamat
+@date: 22/01/2019
+=end
+
+def check_rotation(first, second)
+  if first.length != second.length
+    return false
+  end
+  i = 0
+  curr = second.index(first[0])
+  if curr == nil
+    return false
+  end
+  i += 1
+  curr = (curr + 1) % (first.length)
+  until i >= second.length
+      if first[i] != second[curr]
+        return false
+      end
+      i += 1
+      curr = (curr + 1) % (first.length)
+  end
+  true
+end
+
+def parse_input_array()
+  gets.chomp!.gsub(/\]|\[/, '').split(',').map{|s| s.to_i}
+end
+
+def main
+  print "Enter the first array: "
+  first = parse_input_array()
+  print "Enter the second array: "
+  second = parse_input_array()
+  puts check_rotation(first, second)
+end
+
+main