initial commit of BRouter Version 0.98

brouter-util/src/main/java/btools/util/LongList.java

@@ -0,0 +1,43 @@
+package btools.util;
+
+/**
+ * dynamic list of primitive longs
+ *
+ * @author ab
+ */
+public class LongList
+{
+  private long[] a;
+  private int size;
+
+  public LongList( int capacity )
+  {
+    a = capacity < 4 ? new long[4] : new long[capacity];
+  }
+
+  public void add( long value )
+  {
+    if ( size == a.length )
+    {
+      long[] aa = new long[2*size];
+      System.arraycopy( a, 0, aa, 0, size );
+      a = aa;
+    }
+    a[size++] = value;
+  }
+
+  public long get( int idx )
+  {
+    if ( idx >= size )
+    {
+      throw new IndexOutOfBoundsException( "list size=" + size + " idx=" + idx );
+    }
+    return a[idx];
+  }
+
+  public int size()
+  {
+    return size;
+  }
+
+}