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