1. [code=Java]
   
2. public class Test {
   
3. public static void main(String[] args) {
   
4.   String s = "30 31   32*40   *32";
   
5.   StringBuilder sb = new StringBuilder(s);
   
6.   sb.replace(5, 8, " ").replace(8, 9, " ").replace(11, 15, " ");
   
7.   System.out.println(sb.toString());
   
8.     }
   
9. }
   

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[/code]怎么把30 31   32*40   *32用正则变成30 31 32 40 32

1. public class Test {
   
2. public static void main(String[] args) {
   
3.   String s = "30 31   32*40   *32";
   
4.   s = s.replaceAll("(\\*)+"," ");  //将*出现的用空格替换
   
5.   //再将多个空格替换成一个空格
   
6.   s = s.replaceAll("( )\\1+","$1");
   
7.   System.out.println(s);
   
8.     }
   
9. }

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1. public class Test {
   
2. public static void main(String[] args) {
   
3.   String s = "30 31   32*40   *32";
   
4.   s = s.replaceAll("(\\*)+"," ");  //将*出现的用空格替换
   
5.   //再将多个空格替换成一个空格
   
6.   s = s.replaceAll("( )\\1+","$1");
   
7.   System.out.println(s);
   
8.     }
   
9. }

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