lots of new files

[IRC.git] / Robust / src / ClassLibrary / Vector.java

diff --git a/Robust/src/ClassLibrary/Vector.java b/Robust/src/ClassLibrary/Vector.java
new file mode 100644 (file)
index 0000000..c145d14
--- /dev/null
+++ b/Robust/src/ClassLibrary/Vector.java
@@ -0,0 +1,83 @@
+public class Vector {
+    Object[] array;
+    int size;
+    int capacityIncrement;
+
+    public Vector() {
+       capacityIncrement=0;
+       size=0;
+       array=new Object[10];
+    }
+
+    public void clear() {
+       size=0;
+       array=new Object[10];
+    }
+
+    public int indexOf(Object elem) {
+       return indexOf(elem, 0);
+    }
+
+    public int indexOf(Object elem, int index) {
+       for(int i=index;i<size;i++) {
+           if (elem.equals(array[i]))
+               return i;
+       }
+       return -1;
+    }
+
+    public Object elementAt(int index) {
+       if (index<0 || index >=size) {
+           System.printString("Illegal Vector.elementAt");
+           return null;
+       }
+       return array[index];
+    }
+
+    public void setElementAt(Object obj, int index) {
+       if (index>=0 && index <size)
+           array[index]=obj;
+       else
+           System.printString("Illegal setElementAt");
+    }
+
+    private ensureCapacity(int minCapacity) {
+       if (minCapacity>array.length) {
+           int newsize;
+           if (capacityIncrement<=0)
+               newsize=array.length*2;
+           else
+               newsize=array.length+capacityIncrement;
+           if (newsize<minCapacity)
+               newsize=minCapacity;
+           Object [] newarray=new Object[minCapacity];
+           for(int i=0;i<size;i++)
+               newarray[i]=array[i];
+           array=newarray;
+       }
+    }
+
+    public int size() {
+       return size;
+    }
+
+    public Enumeration elements() {
+       System.printString("Vector.elements not implemented");
+    }
+
+    public void addElement(Object obj) {
+       if (size==array.length) {
+           ensureCapacity(size+1);
+       }
+       array[size++]=obj;
+    }
+
+    public void removeElementAt(int index) {
+       if (index<0||index>=size)
+           System.printString("Illegal remove");
+       for(int i=index;i<(size-1);i++) {
+           array[i]=array[i+1];
+       }
+       size--;
+    }
+}