Mirror Line?

Is the parade line the same read from both ends? Check it from BOTH ends at once! 🪞

You get the words of the line. Using a deque, repeatedly compare-and-remove the two ends. Print mirror line or not a mirror. (You solved mirrors with a stack — this is approach two. One more awaits!)

Example:

Input: words = ["drum", "horn", "flag", "horn", "drum"] Output: mirror line

Comparing and removing both ends each round — drum = drum, horn = horn — leaves just flag in the middle, which is automatically fine.