39 lines
702 B
Go
39 lines
702 B
Go
// Package q1117 implements a solution for https://leetcode.com/problems/building-h2o/
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package q1117
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type void struct{}
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type H2O struct {
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h, o, hRel chan void
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}
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func NewH2O() *H2O {
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h := &H2O{
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h: make(chan void, 2),
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o: make(chan void, 2),
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hRel: make(chan void, 2),
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}
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h.o <- void{}
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return h
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}
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func (h *H2O) Hydrogen(releaseHydrogen func()) {
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<-h.h
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// releaseHydrogen() outputs "H". Do not change or remove this line.
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releaseHydrogen()
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h.hRel <- void{} // confirmation
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}
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func (h *H2O) Oxygen(releaseOxygen func()) {
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<-h.o
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// releaseOxygen() outputs "H". Do not change or remove this line.
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releaseOxygen()
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h.h <- void{}
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h.h <- void{}
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<-h.hRel
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<-h.hRel
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h.o <- void{}
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}
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