如何将一个修剪所有非字母数字字符从字符串的开头和结尾字符和数字的？

How would one trim all non-alphanumeric and numeric characters from the beginning and end of a string?

youdao

如何将一个修剪所有非字母数字字符从字符串的开头和结尾字符和数字的？

How would one trim all non-alphanumeric and numeric characters from the beginning and end of a string?

youdao