[{"title":"( 2 个子文件 2KB ) 搜索算法解决九宫重排问题","children":[{"title":"九宫重排","children":[{"title":"Solution.java <span style='color:#111;'> 4.18KB </span>","children":null,"spread":false},{"title":"Test.java <span style='color:#111;'> 348B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]