Merge pull request careermonk#12 from shanmukht/master

currentSum was not calculated at each level.

Author: careermonk

src/chapter06trees/FindLevelwithMaxSum.java

@@ -29,6 +29,7 @@ public int findLevelwithMaxSum(BinaryTreeNode root) {
 		while (!q.isEmpty()) {
 			BinaryTreeNode tmp = q.poll();
 			if (tmp != null) {
+				currentSum += tmp.getData();
 				if (tmp.getLeft() != null)
 					q.offer(tmp.getLeft());
 				if (tmp.right != null)