Method move

app/src/main/java/solver/EightPuzzle.java:52–62

(int m)

    }

    private static int move(int m) {
        int pos = 0;
        for (; pos < 9; pos++) {
            if (pz[pos] == 8) break;
        }
        int next = moveIdx[pos][m];
        if (next != -1) {
            Utils.swap(pz, pos, next);
        }
        return next;
    }

    static boolean search(int state, int d) {
        if (d == 0) return state == 0;