feat(queue): 自 go-hua/queue 原样迁入链式队列

- 代码与测试不变,附 examples/queue 例程与包 README(含哨兵头结点 Pop 语义说明)
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2026-09-20 12:20:51 +08:00
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// queue 包示例:链式队列(Create 批量建队、Push 入列、Pop 出队、Print、Length)
package main
import (
"fmt"
"git.zeroonesoft.cn/golib/zogo/queue"
)
func main() {
// 头结点作为哨兵,Create 批量创建队列元素
q := &queue.QueueNode{}
q.Create(1, 2, 3)
fmt.Print("Create 后队列: ")
q.Print()
fmt.Println("Length:", q.Length())
// Push 入列(追加到队尾)
q.Push(4)
fmt.Print("Push 4 后: ")
q.Print()
fmt.Println("Length:", q.Length())
// Pop 出队:在头结点上调用,返回头结点自身 Data(哨兵为 nil),并使队列前进一个节点
_ = q.Pop()
fmt.Print("Pop 后队列: ")
q.Print()
fmt.Println("Length:", q.Length())
}