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]
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+low=0
+num=20
+high=len[]-1
+while True:
+    mid=[low + high]//2
+    num=20
+    if num==list[mid]:
+        print("找到了")
+        break
+    elif num_list(mid):
+        high=mid-1
+    else:
+        low=mid+1
+