{"id":"valid-palindrome-empty-is-palindrome","text":"An empty string or a string with no alphanumeric characters returns `True` because the outer loop condition `left < right` is never satisfied.","truth_value":"IN","source":"entries/2026/06/06/valid-palindrome-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":["edge-case-inputs-crash-free"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"valid-palindrome-empty-is-palindrome","truth_value":"IN","reason":"premise"}]}}