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]
\ No newline at end of file
+a=20
+s=9
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+low=0
+higt=len(num_list)-1
+while low<=higt:
+    d=(low+higt)//2
+    f=num_list[d]
+    if f==a:
+        print(f)
+        break
+    elif f<a:
+        low=d+1
+    else:
+        higt=d-1
\ No newline at end of file