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Create 0705-design-hashset.go #4853

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Create 0705-design-hashset.go #4853

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28 changes: 28 additions & 0 deletions go/0705-design-hashset.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
type MyHashSet struct {
present []bool
}

func Constructor() MyHashSet {
return MyHashSet{
present: make([]bool, 1000001),
}
}

func (this *MyHashSet) Add(key int) {
if key >= 0 && key < len(this.present) {
this.present[key] = true
}
}

func (this *MyHashSet) Remove(key int) {
if key >= 0 && key < len(this.present) {
this.present[key] = false
}
}

func (this *MyHashSet) Contains(key int) bool {
if key < 0 || key >= len(this.present) {
return false
}
return this.present[key]
}