466 - Mirror, Mirror

Difficulty : easy

Solution Description :

Array manipulation problem

Do this what is say in problem description

This is the proper order I should check:
preserved
rotated 90 degrees
rotated 180 degrees
rotated 270 degrees
reflected vertically
reflected vertically and rotated 90 degrees
reflected vertically and rotated 180 degrees
reflected vertically and rotated 270 degrees
improperly transformed
i.e
cost(preserved) < cost(90degrees) < cost(180degrees) < cost(270degrees) < cost(verticalreflection) < cost(verticalreflection+90degrees) < cost(verticalreflection+180degrees) < cost(verticalreflection+270degrees)<cost(improperly transformed)