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Diffstat (limited to 'src/demos/util/FloatList.java')
-rw-r--r-- | src/demos/util/FloatList.java | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/demos/util/FloatList.java b/src/demos/util/FloatList.java new file mode 100644 index 0000000..fe06e2e --- /dev/null +++ b/src/demos/util/FloatList.java @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * - Redistribution of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistribution in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of Sun Microsystems, Inc. or the names of + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * This software is provided "AS IS," without a warranty of any kind. ALL + * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, + * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN + * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR + * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR + * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR + * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR + * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE + * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, + * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF + * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + * + * You acknowledge that this software is not designed or intended for use + * in the design, construction, operation or maintenance of any nuclear + * facility. + * + * Sun gratefully acknowledges that this software was originally authored + * and developed by Kenneth Bradley Russell and Christopher John Kline. + */ + +package demos.util; + +/** Growable array of floats. */ + +public class FloatList { + private static final int DEFAULT_SIZE = 10; + + private float[] data = new float[DEFAULT_SIZE]; + private int numElements; + + public void add(float f) { + if (numElements == data.length) { + resize(1 + numElements); + } + data[numElements++] = f; + assert numElements <= data.length; + } + + public int size() { + return numElements; + } + + public float get(int index) { + if (index >= numElements) { + throw new ArrayIndexOutOfBoundsException(index); + } + return data[index]; + } + + public void put(int index, float val) { + if (index >= numElements) { + throw new ArrayIndexOutOfBoundsException(index); + } + data[index] = val; + } + + public void trim() { + if (data.length > numElements) { + float[] newData = new float[numElements]; + System.arraycopy(data, 0, newData, 0, numElements); + data = newData; + } + } + + public float[] getData() { + return data; + } + + private void resize(int minCapacity) { + int newCapacity = 2 * data.length; + if (newCapacity == 0) { + newCapacity = DEFAULT_SIZE; + } + if (newCapacity < minCapacity) { + newCapacity = minCapacity; + } + float[] newData = new float[newCapacity]; + System.arraycopy(data, 0, newData, 0, data.length); + data = newData; + } +} |