save project

binary_search.py

+bingo_num=20
 # 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]
+low=0
+high=len(num_list)
+while low <= high:
+    mid = (low+high)//2
+    guees = num_list[mid]
+    if guees==bingo_num:
+        print("找到了 他的索引",mid)
+        break
+    elif guees<bingo_num:
+        low=mid+1
+    elif guees > bingo_num:
+        low=mid-1
\ No newline at end of file