Method get

java/0146-lru-cache.java:20–28

(int key)

    }

    public int get(int key) {
        if (cache.containsKey(key)) {
            remove(cache.get(key));
            insert(cache.get(key));
            return cache.get(key).val;
        } else {
            return -1;
        }
    }

    public void put(int key, int value) {
        if (cache.containsKey(key)) {