comefrom: <awangdev>Restore IP Addresses_1.java
code: public boolean isValid(String str) {
      	if (str.charAt(0) == '0') {
      		return str.equals("0");
      	}
      	int num = Integer.parseInt(str);
      	return num <= 255 && num >= 0;
      }
masked: public boolean var_0 ( String var_2 ) {
    if ( var_2 . charAt ( 0 ) == '0' ) {
      return var_2 . equals ( "0" ) ;
    }
    int var_10 = Integer . parseInt ( var_2 ) ;
    return var_10 <= 255 && var_10 >= 0 ;
  }
  