<awangdev>125. Valid Palindrome_1.java
private boolean isValid(char c) {

        if (c >= '0' &&  c <= '9') return true;
        if (c >= 'a' &&  c <= 'z') return true;
        if (c >= 'A' &&  c <= 'Z') return true;
        return false;
    }
private boolean var_0 ( char var_1 ) {
  if ( var_1 >= '0' && var_1 <= '9' ) return true ;
  if ( var_1 >= 'a' && var_1 <= 'z' ) return true ;
  if ( var_1 >= 'A' && var_1 <= 'Z' ) return true ;
  return false ;
}
