- class Main { 
- 	public static void-  main  (String[]-  args ) {
 
- 		System- . out- . println(- countVirgulas ("30,60,90"));
 
- 	} 
-     static int-  countVirgulas (String-  parametro ) {
 
-         int count = 0; 
-         for (int i = 0; i < parametro.length(); i++) { 
-             if (parametro.charAt(i) == ',') { 
-                 count++; 
-             } 
-         } 
-         return count; 
-     } 
- } 
-   
- //https://pt.stackoverflow.com/q/106096/101 
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