From 85771ea74fdeaf7756b87c7fadcb7884ac6a7a32 Mon Sep 17 00:00:00 2001
From: feng liu <fengxliu@gmail.com>
Date: Sun, 1 Oct 2017 17:26:05 -0600
Subject: [PATCH] prevent (ub+lb) overflow

---
 Searches/BinarySearch.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Searches/BinarySearch.java b/Searches/BinarySearch.java
index 3949f6a86..535442c87 100644
--- a/Searches/BinarySearch.java
+++ b/Searches/BinarySearch.java
@@ -23,7 +23,7 @@ class BinarySearch
         if ( lb > ub)
             return -1;
 
-        int mid = (ub+lb)/2;
+        int mid = (ub+lb) >>> 1;
         int comp = key.compareTo(array[mid]);
 
         if (comp < 0)