{"id":"counter-dominant-frequency-tool","text":"`Counter` from `collections` is the dominant tool across this repo for pair-counting and frequency-analysis problems, used by `max_number_of_balloons`, `countBalls`, and `count_pairs_leftovers` among others.","truth_value":"IN","source":"entries/2026/06/06/maximum-number-of-pairs-in-array-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":["counter-universal-frequency-primitive"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"counter-dominant-frequency-tool","truth_value":"IN","reason":"premise"}]}}