字符串中重复出现字符串个数

 1   public static void main(String[] args) {
 2         String a = "1;2;1;4;5;6;7;8;9;0";
 3         String[] b = a.split(";");
 4         for (int i = 0; i < b.length; i++) {
 5             int count1 = substringCount(a, b[i]);
 6             System.out.println(count1);
 7             if (count1 > 1) {
 8                 a = a.replace(b[i], "");
 9             }
10         }
11     }
12 
13     public static int substringCount(String str, String substring) {
14         if (str.contains(substring)) {
15             String strReplaced = str.replace(substring, "");
16             return (str.length() - strReplaced.length()) / substring.length();
17         }
18         return 0;
19     }