一键得到交集并集差集

[{"title":"（ 3 个子文件 264KB ） 一键得到交集并集差集","children":[{"title":"一键得到交集并集差集","children":[{"title":"Data","children":[{"title":"Data.mdb <span style='color:#111;'> 324.00KB </span>","children":null,"spread":false}],"spread":true},{"title":"Result.txt <span style='color:#111;'> 989B </span>","children":null,"spread":false},{"title":"SetCalc.exe <span style='color:#111;'> 627.00KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]