save project

binary_search.py

 # 使用二分查找法，找出9和20在列表里面的索引
 # 使用二分查找法，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]
+o = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
\ No newline at end of file
+low=0
+high=len(o)-1
+num=18
+while high>low:
+    mid=(low+high)//2
+    if num==o[mid]:
+        print("SB",mid)
+        break
+    elif o[mid]<num:
+        high=high-1
+    else :
+       low=o[mid]+1
+            
\ No newline at end of file