&(set2)
println(newSet)
Set(5, 4)
intersect 方式
val newSet=set1.intersect(set2)
println(newSet)
Set(5,...&~(set2)
println(newSet)
Set(1, 2, 3)
diff
val newSet=set1.diff(set2)
println(newSet)
Set(1, 2, 3)
添加元素...+ 添加单个元素
val newSet=set1.+(10)
println(newSet)
Set(5, 10, 1, 2, 3, 4)
合并两个集合
++
val newSet=set1....++(set2)
println(newSet)
Set(5, 1, 6, 2, 7, 3, 8, 4)
++:
val newSet=set1....++:(set2)
println(newSet)
Set(5, 1, 6, 2, 7, 3, 8, 4)
删除元素
- 删除单个元素
val newSet=set1.-(2)
println(newSet