save project

binary_search.py

@@ -8,9 +8,9 @@ while d>x:
     z=(d+x)//2
     guess=num_list[z]
     if num>guess:
-        d=z-1
-    elif num<guess:
         x=z+1
+    elif num<guess:
+        d=z-1
     elif num==guess:
         print('找到了')
         break