摘要：package main import "fmt" func main() { var totalLevel int = 10 for i := 1; i <= totalLevel; i++ { for k := 1; k <= totalLevel-i; k++ { fmt.Print(" ") 阅读全文

摘要：package main import ( "fmt" "sync" ) func square(test *sync.WaitGroup, n int) { //使用sync.WaitGroup来等待所有goroutine完成 defer test.Done() //确保在 square 函数结束 阅读全文