From 726d664db7f293dd97fc1a1c359d57f2cbdc9ffb Mon Sep 17 00:00:00 2001
From: Jestine Paul <jestinepaul@users.noreply.github.com>
Date: Sat, 24 Oct 2015 20:43:17 +0800
Subject: [PATCH] Simplify logic

---
 java/Chapter 4/Question4_5/QuestionB.java | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/java/Chapter 4/Question4_5/QuestionB.java b/java/Chapter 4/Question4_5/QuestionB.java
index 1fe88b75..8dd1d0e3 100644
--- a/java/Chapter 4/Question4_5/QuestionB.java	
+++ b/java/Chapter 4/Question4_5/QuestionB.java	
@@ -11,11 +11,7 @@ public static boolean checkBST(TreeNode n, Integer min, Integer max) {
 		if ((min != null && n.data <= min) || (max != null && n.data > max)) {
 			return false;
 		}
-		if (!checkBST(n.left, min, n.data) ||
-			!checkBST(n.right, n.data, max)) {
-			return false;
-		}
-		return true;
+		return checkBST(n.left, min, n.data) && checkBST(n.right, n.data, max);
 	}
 		
 	public static boolean checkBST(TreeNode n) {