comefrom: <awangdev>399. Evaluate Division_1.java
code: private String getKey(String a, String b) {
  
          return String.format("%s->%s", a, b);
      }
masked: private String var_0 ( String var_2 , String var_3 ) {
    return String . format ( "%s->%s" , var_2 , var_3 ) ;
  }
  