comefrom: <awangdev>13. Roman to Integer_1.java
code: private int countCombo(final String pattern, String str) {
  
          int count = 0;
          while (str.contains(pattern)) {
              count++;
              str = str.substring(str.indexOf(pattern) + pattern.length());
          }
          return count;
      }
masked: private int sample_funcname ( final String var_0 , String var_1 ) {
    int var_2 = 0 ;
    while ( var_1 . contains ( var_0 ) ) {
      var_2 ++ ;
      var_1 = var_1 . substring ( var_1 . indexOf ( var_0 ) + var_0 . length ( ) ) ;
    }
    return var_2 ;
  }
  