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]
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+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+
+
+
+def zhao(bingo_num):
+    low = 0
+    high = len(num_list)-1
+    while low <=high:
+        mid = (low+high)//2
+        guess = num_list[mid]
+        if guess == bingo_num:
+            print('找到了位置是',mid)
+            break
+        elif  guess >bingo_num:
+            high = mid-1
+        elif  guess <bingo_num:
+            low = mid+1
+print(zhao(20))
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