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Go language data structure analysis: master the secrets of queues and stacks

Apr 08, 2024 am 10:18 AM
go language data structure stack queue

队列遵循 FIFO 原则,提供 Enqueue、Dequeue 和 Peek 操作;栈遵循 LIFO 原则,提供 Push、Pop 和 Peek 操作。队列用于任务队列,栈用于函数调用、递归和括号匹配。

Go language data structure analysis: master the secrets of queues and stacks

Go 语言数据结构精解:掌握队列和栈的奥秘

前言

栈和队列是计算机科学中至关重要的数据结构,在各种应用中发挥着不可或缺的作用。在 Go 语言中,它们提供了强大的工具来管理数据并解决复杂的问题。本文将深入探讨 Go 语言中的栈和队列,提供清晰的解释、代码示例和实战案例,让你对这些数据结构有深入的理解。

队列

队列是一种遵循先入先出 (FIFO) 原则的线性数据结构。它的操作包括:

  • Enqueue():将一个元素添加到队列的末尾
  • Dequeue():从队列的开头移除一个元素
  • Peek():读取队列中第一个而不删除元素

代码示例:

type Queue []int

func (q *Queue) Enqueue(x int) {
    *q = append(*q, x)
}

func (q *Queue) Dequeue() int {
    if q.IsEmpty() {
        panic("queue is empty")
    }
    x := (*q)[0]
    *q = (*q)[1:]
    return x
}

func (q *Queue) Peek() int {
    if q.IsEmpty() {
        panic("queue is empty")
    }
    return (*q)[0]
}

func (q *Queue) IsEmpty() bool {
    return len(*q) == 0
}
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实战案例:

  • 任务队列:将任务添加到队列中,然后按照先到先服务的顺序处理它们。

栈是一种遵循后入先出 (LIFO) 原则的线性数据结构。它的操作包括:

  • Push():将一个元素压入栈的顶部
  • Pop():从栈的顶部弹出并移除一个元素
  • Peek():读取栈顶元素而不删除元素

代码示例:

type Stack []int

func (s *Stack) Push(x int) {
    *s = append(*s, x)
}

func (s *Stack) Pop() int {
    if s.IsEmpty() {
        panic("stack is empty")
    }
    x := (*s)[len(*s)-1]
    *s = (*s)[:len(*s)-1]
    return x
}

func (s *Stack) Peek() int {
    if s.IsEmpty() {
        panic("stack is empty")
    }
    return (*s)[len(*s)-1]
}

func (s *Stack) IsEmpty() bool {
    return len(*s) == 0
}
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实战案例:

  • 函数调用:栈用于存储函数调用时的局部变量和上下文。
  • 递归:栈用于存储递归函数调用的返回地址。
  • 括号匹配:利用栈来检查括号是否匹配。

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