{"id":"grid-as-strings-idiom","text":"String-grid problems in this repo index directly into strings with `strs[i][j]` rather than converting to a 2D array, avoiding allocation at the cost of assuming uniform string length.","truth_value":"IN","source":"entries/2026/06/06/delete-columns-to-make-sorted-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"grid-as-strings-idiom","truth_value":"IN","reason":"premise"}]}}