Create nesting.rb

Author: rehan-akmal

nesting.rb

@@ -0,0 +1,13 @@
+def solution(s)
+  return 1 if s.length == 0
+  open_stack = []
+  s.split("").each do |el|
+    if el == "("
+      open_stack.push(el)
+    else
+      return 0 if open_stack.length == 0
+      open_stack.pop
+    end
+  end
+  open_stack.length == 0 ? 1 : 0 
+end