Test each_slice

overengineering.rb

@@ -1,16 +1,24 @@
 require 'benchmark'
 
-def split_and_rotate(arr)
-  midpoint = arr.length / 2
-  arr[0...midpoint] + arr[midpoint..-1]
+def split_and_rotate_with_each_slice(arr)
+  # Use each_slice to split the array into two parts
+  parts = arr.each_slice(arr.length/2).to_a
+  # Rotate the array by concatenating the back part with the front part
+  parts[1] + parts[0]
 end
 
+
+
 # Create a large array with 1 million entries
 large_array = (1..1_000_000).to_a
 
+# test with small array 1, 2, 3, 4, 5, 6
+# expected output: 3, 4, 5, 6, 1, 2
+puts split_and_rotate_with_each_slice([1, 2, 3, 4, 5, 6])
+
 # Run the operation 1000 times and calculate the average time
 total_time = 0
-iterations = 1000
+iterations = 100
 
 iterations.times do
   time_taken = Benchmark.realtime do
@@ -23,3 +31,15 @@ end
 
 average_time = total_time / iterations
 puts "Average time taken over #{iterations} iterations: #{average_time} seconds"
+
+iterations.times do
+  time_taken = Benchmark.realtime do
+    split_and_rotate_with_each_slice(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 with .each_slice over #{iterations} iterations: #{average_time} seconds"