content: /*
   * Copyright 2007 Yusuke Yamamoto
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package twitter4j;
  
  /**
   * @author Yusuke Yamamoto - yusuke at mac.com
   * @since Twitter4J 2.1.4
   */
  class StringUtil {
      private StringUtil() {
          throw new AssertionError();
      }
  
      public static String join(long[] follows) {
          StringBuilder buf = new StringBuilder(11 * follows.length);
          for (long follow : follows) {
              if (0 != buf.length()) {
                  buf.append(",");
              }
              buf.append(follow);
          }
          return buf.toString();
      }
  
      public static String join(String[] track) {
          StringBuilder buf = new StringBuilder(11 * track.length);
          for (String str : track) {
              if (0 != buf.length()) {
                  buf.append(",");
              }
              buf.append(str);
          }
          return buf.toString();
      }
  
  }
  