Synchronized queue

A synchronized queue consists of elements that need to be processed in a particular sequence. Passenger queue and ticket processing queues are types of synchronized queues, as follows:

//main package has examples shown
// in Hands-On Data Structures and algorithms with Go book
package main
// importing fmt package
import (
 "fmt"
 "time"
 "math/rand"
)
// constants
const (
 messagePassStart = iota
 messageTicketStart
 messagePassEnd
 messageTicketEnd
)
//Queue class
type Queue struct {
 waitPass int
 waitTicket int
 playPass bool
 playTicket bool
 queuePass chan int
 queueTicket chan int
 message chan int
}

We will discuss the different methods of synchronized queue in the following sections.