例如,str="hello_yyo___koko__!!!";
newStr="hello_yyo_koko_!!!";
------解决方案--------------------
用replaceAll，当然，还有正则
代码如下：
- Java code
public class BlankTest { public static void main(String[] args) { System.out.println(deleteMulBlank("hello yyo koko !!!")); System.out.println(deleteMulBlank("afsaf fdsfdf fsdfsdf fs fs dfsdfsfsdf sdfsdfsdf sdfsdf sd fs f sdf sdf sdfd")); } public static String deleteMulBlank(String str){ return str.replaceAll("[ ]{2,}", " "); }}