Create triangle.rb

Author: rehan-akmal

triangle.rb

@@ -0,0 +1,13 @@
+def solution(a)
+  a.sort!
+
+  a.each_with_index do |element, index|
+    next if index > (a.length - 3)
+    p = a[index]
+    q = a[index + 1]
+    r = a[index + 2]
+    return 1 if ( p+q > r && q+r > p && r+p > q)
+  end
+
+  return 0
+end