auto save

Untitled-1.py.py

+import random
+
+alist = []
+for i in range(1, 101):
+    alist.append(i)
+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):
+    low=0
+    high=len(alist)-1
+    while low<=high:
+        mid=(low+high)//2
+        aa=alist[mid]
+        if aa==num:
+            return mid
+        elif aa < num:
+            low=mid+1
+        else:
+            high=mid-1
+    return None
+jieguo = binary_search(alist,num)
+print(num)
+print(jieguo)
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my_search.py

-import random
-
-alist = []
-for i in range(1, 101):
-    alist.append(i)
-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):
\ No newline at end of file
+print()
\ No newline at end of file