save project

binary_search.py

@@ -4,6 +4,7 @@ num = 20
 low = 0
 high = len(num_list )-1
 while True:
+    if high<=num:
         mid = (low+high)//2
         guess = num_list[mid]
         if guess == num:
@@ -14,6 +15,9 @@ while True:
         else:
             
             high = mid-1
+    else:
+        print("没找到")
+        break
 
         
         
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