{"id":"two-pointer-pattern-variants","text":"The repo contains multiple two-pointer variants: inward sweep (valid-palindrome), lockstep with skip (valid-word-abbreviation), and matrix transpose walk (valid-word-square) — all sharing the fail-fast early-return idiom.","truth_value":"IN","source":"entries/2026/06/06/valid-palindrome-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"two-pointer-pattern-variants","truth_value":"IN","reason":"premise"}]}}