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