Level 3Exercise #63

Deque palindrome

Check a sequence by repeatedly comparing its leftmost and rightmost values.

What you’ll practice

This Level 3 exercise focuses on deque both ends in the Collections curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: collections.deque.

Sample Test Cases

Example #1

Input:deque_palindrome('level')

Output:True

Reference Solution

Reveal Reference Solution

def deque_palindrome(text: str) -> bool:
    from collections import deque
    chars = deque(text)
    while len(chars) > 1:
        if chars.popleft() != chars.pop():
            return False
    return True

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Deque palindrome

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution