auto save

a.py/s.py

+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+abc(num_list,11)
\ No newline at end of file

binary_search.py

 # 使a=9用二分查找法，找出9和20在列表里面的索引
 # 使a=9用二分查找法，找出9和20在列表里面的索引
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
-a=9
+a=20
 b=20
 b=20
-lou=0
-high=len(num_list)-1
-mid=(lou+high)//2
-if num_list[mid]==a:
-    print("找到了！")
-elif num_list[mid]<a:
-    lou=mid+1
-else:
-    high=mid-1
+
+
+def abc(alist,num):
+    lou=0
+    high=len(num_list)-1
+    while lou <= high:
+       
+        mid=(lou+high)//2
+        if alist[mid]==num:
\ No newline at end of file
+            print("找到了！")
+            exit()
+        elif alist[mid]<num:
+            lou=mid+1
+        else:
+            high=mid-1
+abc(num_list,11)
\ No newline at end of file