absolutely stupid

bubble.go

package main

import (
	"fmt"
	"os"
	"strings"
	"time"
	"unicode/utf8"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Fprintf(os.Stderr, 
		            "%s: you must supply at least one argument\n",
		            os.Args[0])
		os.Exit(1)
	}

	str := strings.Join(os.Args[1:], " ")
	cnt := utf8.RuneCountInString(str)
	bubble := []int{2, 3, 3, 4, 5, 4, 3, 3, 2}
	rail := make([]int, cnt * 2 + len(bubble))
	copy(rail[cnt:], bubble)
	width := cnt * 2
	for _, n := range bubble {
		width += n
	}	
		
	for j := len(rail) - cnt; j >= 0; j-- {
		fmt.Printf("\r%*s\r", width , "")
		i := 0
		for _, r := range str {
			fmt.Printf("%*c", rail[j+i], r)
			i++
		}
		time.Sleep(70 * time.Millisecond)
	}
	fmt.Print("\n")
}