Add test for split_and_rotate

overengineering.rb

@@ -0,0 +1,25 @@
+require 'benchmark'
+
+def split_and_rotate(arr)
+  midpoint = arr.length / 2
+  arr[0...midpoint] + arr[midpoint..-1]
+end
+
+# Create a large array with 1 million entries
+large_array = (1..1_000_000).to_a
+
+# Run the operation 1000 times and calculate the average time
+total_time = 0
+iterations = 1000
+
+iterations.times do
+  time_taken = Benchmark.realtime do
+    split_and_rotate(large_array)
+  end
+  total_time += time_taken
+  # shuffle the array to avoid caching
+  large_array.shuffle!
+end
+
+average_time = total_time / iterations
+puts "Average time taken over #{iterations} iterations: #{average_time} seconds"