What is required for the hover-blocks to form a stable bridge?

• They must be arranged in alphabetical order

• They must be arranged in a random order

• They must be arranged in a palindromic sequence

• They must be arranged in a sequential order

What happens if the hover-blocks cannot form a palindrome?

• The bridge collapses

• The bridge expands further

• The bridge becomes colorful

• The bridge remains stable

Why is the naive solution considered inefficient?

• It takes too much time

• It uses too much energy

• It requires too many blocks

• It is too simple

What is the maximum number of letters that can appear an odd number of times in a palindromic sequence?

• None

• Two

• Three

• One

What is the time complexity of the efficient solution to check if a stack can form a palindrome?

• Exponential time

• Factorial time

• Quadratic time

• Linear time