题解 | #表示数字#

package main

import (
    "fmt"
)

func isDigit(ch byte) bool {
    return '0' <= ch && ch <= '9'
}

func transString(s string) string {
    var bs []byte

    right := 0
    for right < len(s) {
        if !isDigit(s[right]) {
            bs = append(bs, s[right])
            right++
            continue
        }

        bs = append(bs, '*')
        for right < len(s) && isDigit(s[right]) {
            bs = append(bs, s[right])
            right++
        }
        bs = append(bs, '*')
    }

    return string(bs)
}

func main() {
    var s string
    fmt.Scan(&s)
    fmt.Println(transString(s))
}

// 本题输入为一个字符串，所以采用：fmt.Scan(&s)