/[classpath]/classpath/gnu/java/lang/ArrayHelper.java
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revision 1.4 by mark, Tue Jan 22 22:26:57 2002 UTC revision 1.5 by ericb, Sat Feb 23 09:19:52 2002 UTC
# Line 1  Line 1 
1  /* gnu.java.lang.ArrayHelper  /* ArrayHelper.java -- Helper methods for handling array operations
2     Copyright (C) 1998 Free Software Foundation, Inc.     Copyright (C) 1998, 2002 Free Software Foundation, Inc.
3    
4  This file is part of GNU Classpath.  This file is part of GNU Classpath.
5    
# Line 7  GNU Classpath is free software; you can Line 7  GNU Classpath is free software; you can
7  it under the terms of the GNU General Public License as published by  it under the terms of the GNU General Public License as published by
8  the Free Software Foundation; either version 2, or (at your option)  the Free Software Foundation; either version 2, or (at your option)
9  any later version.  any later version.
10    
11  GNU Classpath is distributed in the hope that it will be useful, but  GNU Classpath is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Line 39  exception statement from your version. * Line 39  exception statement from your version. *
39  package gnu.java.lang;  package gnu.java.lang;
40    
41  /**  /**
42   ** ArrayHelper helps you do things with arrays.   * ArrayHelper helps you do things with arrays.
43   **   *
44   ** @author John Keiser   * @author John Keiser
45   ** @version 1.1.0, 29 Jul 1998   */
46   **/  public class ArrayHelper
47    {
48  public class ArrayHelper {    /**
49          public static boolean contains(Object[] array, Object searchFor) {     * Counterpart to java.util.Collection.contains.
50                  return indexOf(array,searchFor) != -1;     *
51          }     * @param array the array to search
52       * @param searchFor the object to locate
53          public static int indexOf(Object[] array, Object searchFor) {     * @return true if some array element <code>equals(searchFor)</code>
54                  for(int i=0;i<array.length;i++) {     */
55                          if(array[i].equals(searchFor)) {    public static boolean contains(Object[] array, Object searchFor)
56                                  return i;    {
57                          }      return indexOf(array, searchFor) != -1;
58                  }    }
59                  return -1;  
60          }    /**
61       * Counterpart to java.util.Collection.indexOf.
62          public static boolean equalsArray(Object[] a, Object[] b) {     *
63                  if(a.length == b.length) {     * @param array the array to search
64                          for(int i=0;i<a.length;i++) {     * @param searchFor the object to locate
65                                  if(!a[i].equals(b[i])) {     * @return the index of the first equal object, or -1
66                                          return false;     */
67                                  }    public static int indexOf(Object[] array, Object searchFor)
68                          }    {
69                          return true;      for (int i = 0; i < array.length; i++)
70                  } else {        {
71                          return false;          if(array[i].equals(searchFor))
72                  }            {
73          }              return i;
74              }
75          }
76        return -1;
77      }
78  }  }

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