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
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
\ No newline at end of file
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+num_9=9
+num_20=20
+hig=len(num_list)-1
+low=0
+bingo_num=15
+while low <= hig:
+    mid=(low+hig)//2
+    guess_num = num_list[mid]
+    if guess_num == bingo_num:
+        print("找到了，是:",mid)
+        break
+    elif guess_num < bingo_num:
+        low = mid+1
+    elif guess_num > bingo_num:
+        hig = mid-1
+        
+
+
+