Returns the maximum value in a long-value array. : Array Sort Search « Collections Data Structure « Java

1. Java
2. Collections Data Structure
3. Array Sort Search

Returns the maximum value in a long-value array.

      
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */


/**
 * <p>Provides extra functionality for Java Number classes.</p>
 *
 * @author <a href="mailto:rand_mcneely@yahoo.com">Rand McNeely</a>
 * @author Stephen Colebourne
 * @author <a href="mailto:steve.downey@netfolio.com">Steve Downey</a>
 * @author Eric Pugh
 * @author Phil Steitz
 * @author Matthew Hawthorne
 * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
 * @author <a href="mailto:fredrik@westermarck.com">Fredrik Westermarck</a>
 * @since 2.0
 * @version $Id: NumberUtils.java 609475 2008-01-06 23:58:59Z bayard $
 */
public class Main {

  /**
   * <p>Returns the maximum value in an array.</p>
   * 
   * @param array  an array, must not be null or empty
   * @return the minimum value in the array
   * @throws IllegalArgumentException if <code>array</code> is <code>null</code>
   * @throws IllegalArgumentException if <code>array</code> is empty
   */
  public static long max(long[] array) {
      // Validates input
      if (array == null) {
          throw new IllegalArgumentException("The Array must not be null");
      } else if (array.length == 0) {
          throw new IllegalArgumentException("Array cannot be empty.");
      }

      // Finds and returns max
      long max = array[0];
      for (int j = 1; j < array.length; j++) {
          if (array[j] > max) {
              max = array[j];
          }
      }

      return max;
  }
}

   
    
    
    
    
    
  

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