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
-bingo_mum = 20
+bingo_mum = 5
 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
-high = len(num_list)-1
-while low <= high:
-    mid = (low+high)//2
-    guess = num_list[mid]
-    if guess == bingo_mum:
-        print("找到了，他的索引是",mid)
-        break
-    elif guess < bingo_mum:
-        low = mid+1
-    else:
-        high = mid-1
-   
+def rfcz(alist,num):
+    low = 0
+    high = len(num_list)-1
+    while low <= high:
+        mid = (low+high)//2
+        guess = num_list[mid]
+        if guess == bingo_mum:
+            print("找到了，他的索引是",mid)
+            break
+        elif guess < bingo_mum:
+            low = mid+1
+        else:
+            high = mid-1
\ No newline at end of file
+    return None
+rusule = rfcz(num_list,5)
+print(rusule)