From dd00b57be87e9c4e25267c5ab6cc53f6d714a97e Mon Sep 17 00:00:00 2001
From: JaneyLin <105125897+janeyziqinglin@users.noreply.github.com>
Date: Mon, 6 Jun 2022 21:43:18 -0500
Subject: [PATCH] =?UTF-8?q?Update=200704.=E4=BA=8C=E5=88=86=E6=9F=A5?=
 =?UTF-8?q?=E6=89=BE.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 problems/0704.二分查找.md | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/problems/0704.二分查找.md b/problems/0704.二分查找.md
index 1e474f9a..a468cc44 100644
--- a/problems/0704.二分查找.md
+++ b/problems/0704.二分查找.md
@@ -218,19 +218,21 @@ class Solution:
 
 （版本二）左闭右开区间
 
-```python
-class Solution:
+```class Solution:
     def search(self, nums: List[int], target: int) -> int:
-        left,right  =0, len(nums)
-        while left < right:
-            mid = (left + right) // 2
-            if nums[mid] < target:
-                left = mid+1
-            elif nums[mid] > target:
-                right = mid
+        if nums is None or len(nums)==0:
+            return -1
+        l=0
+        r=len(nums)-1
+        while (l<=r):
+            m = round(l+(r-l)/2)
+            if nums[m] == target:
+                return m     
+            elif nums[m] > target:
+                r=m-1
             else:
-                return mid
-        return -1
+                l=m+1
+        return -1 
 ```
 
 **Go：**