@@ -0,0 +1,284 @@
+package com.bjtu.zero.a2048;%0A%0Apublic class Block %7B%0A%0A    private int rank;%0A%0A    public int getRank() %7B%0A        return rank;%0A    %7D%0A%0A    public void setRank(int rank) %7B%0A        this.rank = rank;%0A    %7D%0A%0A    public boolean isSameRank(Block b) %7B%0A        return this.rank == b.rank;%0A    %7D%0A%7D%0A

add new class Block