再用n2的时间（两重循环）枚举d-c，并将b-c的值作为键，在Hash数组中查找是否存在。如果能找到key相同的node点，则找到了一组满足 d-c = a+b的值。（注意检查a b c d 四个数不重复） All logos are either the residence of Central Backyard & Pet Company, its subsidiaries, divisions, affiliated and/or similar firms or maybe the home in their respective owners. 兩天 三個月 返 回 When picking Are livin... https://pearlaquatics.my/customized-vs-sobo-aquarium-which-one-to-buy/