2003/12/10 01:41:17

[org.ibex.core.git] / src / org / xwt / util / BalancedTree.java

diff --git a/src/org/xwt/util/BalancedTree.java b/src/org/xwt/util/BalancedTree.java
index e442db3..0f8b62e 100644 (file)
--- a/src/org/xwt/util/BalancedTree.java
+++ b/src/org/xwt/util/BalancedTree.java
@@ -66,7 +66,7 @@ public class BalancedTree {
         if (parent == 0) return size(left[slot]);             // we are on the far left edge
 
         // all nodes after parent and before us are in our left subtree
-        return size(left[slot]) + indexNode(objects[parent]) + 1;
+        return size(left[slot]) + (parent <= 0 ? 0 : indexNode(objects[parent])) + 1;
     }
 
     /** returns the object at index; runs in O(log n) time unless cache hit */
@@ -310,7 +310,7 @@ public class BalancedTree {
             } else {
                 int left_childs_rightmost = delete(size(left[slot]) - 1, left[slot], slot);
                 left[left_childs_rightmost] = left[slot];
-                left[left_childs_rightmost] = right[slot];
+                right[left_childs_rightmost] = right[slot];
                 if (parent == 0) root = left_childs_rightmost;
                 else (left[parent] == slot ? left : right)[parent] = left_childs_rightmost;     // fix parent's pointer
                 balance(left_childs_rightmost, parent);