save project

my_search.py

@@ -6,4 +6,20 @@ for i in range(1, 101):
 num = random.choice(alist)
 # 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
 
-def binary_search(alist,num):
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+def binary_search(alist,num):
+    # 使用二分查找法，找出9和20在列表里面的索引
+    low=0
+    high = len(alist)-1
+    while low <= high:
+        min=(Iow+niggh)//2
+        guess_num = num_list[mid]
+        if guess == num:
+            return mid
+        elif guess_num<bingo_num:
+            low = mid+1
+        elif guess_num<bingo_num:
+            low = mid+1
+    return None
+    result = binary_search(alist, num)
+print("老师给的数是：", num)
+print("它在列表里的索引是：", result)       
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