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]
\ No newline at end of file
+bg=9
+l=0
+h=len(num_list-1)
+while h<l:
+    m=(h+l)//2
+    g=num_list[m]
+    if g==bg:
+        print("找到了，他在列表里的索引是:",m)
+        break
+    elif g<bg:
+        l=m+1
+    elif g>bg:
+        h=m-1
\ No newline at end of file