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Copy pathJFArrayDouble.java
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executable file
·58 lines (47 loc) · 1.14 KB
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package javaforce;
/**
*
* @author pquiring
*
* Created : May 4, 2015
*/
import java.util.*;
public class JFArrayDouble {
private double[] buf;
private int count;
public static int initSize = 64;
public JFArrayDouble() {
count = 0;
buf = new double[initSize];
}
public int size() {
return count;
}
public void clear() {
count = 0;
if (buf.length != initSize) buf = new double[initSize];
}
public void append(double f) {
int newcount = count + 1;
if (newcount > buf.length) {
buf = Arrays.copyOf(buf, Math.max(buf.length << 1, newcount));
}
buf[count] = f;
count = newcount;
}
public void append(double[] f) {
int newcount = count + f.length;
if (newcount > buf.length) {
buf = Arrays.copyOf(buf, Math.max(buf.length << 1, newcount));
}
System.arraycopy(f, 0, buf, count, f.length);
count = newcount;
}
public double[] toArray() {
return Arrays.copyOf(buf, count);
}
//returns the backing buffer (size may be larger than expected)
public double[] getBuffer() {
return buf;
}
}