66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"math/rand"
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"sync"
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"time"
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)
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//使用 goroutine 和 channel 实现一个计算int64随机数各位数和的程序，例如生成随机数61345，计算其每个位数上的数字之和为19。
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//开启一个 goroutine 循环生成int64类型的随机数，发送到jobChan
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//开启24个 goroutine 从jobChan中取出随机数计算各位数的和，将结果发送到resultChan
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//主 goroutine 从resultChan取出结果并打印到终端输出
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var w sync.WaitGroup
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type job struct {
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value int64
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}
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type Result struct {
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job *job
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sum int64
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}
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var jobChan = make(chan *job, 100)
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var resultChan = make(chan *Result, 100)
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func producer(prod chan<- *job) <-chan *job {
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defer w.Done()
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for {
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x := rand.Int63()
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newJob := &job{value: x}
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jobChan <- newJob
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time.Sleep(time.Millisecond * 500)
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}
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}
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func consumer(con chan<- *Result, prod <-chan *job) {
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defer w.Done()
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for {
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v := <-prod
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sum := int64(0)
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n := v.value
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for n > 0 {
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sum += n % 10
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n = n / 10
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}
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newResult := &Result{job: v, sum: sum}
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con <- newResult
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}
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}
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func main() {
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w.Add(1)
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go producer(jobChan)
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w.Add(24)
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for i := 0; i < 24; i++ {
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go consumer(resultChan, jobChan)
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}
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for i := range resultChan {
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fmt.Printf("随机数为：%d,加和为:%d\n", i.job.value, i.sum)
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}
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w.Wait()
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}
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