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
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+l=0
+h=len(num_list)-1
+b=21
+while 1 <= h:
+    m =(l+h)//2
+    g=num_list[m]
+    if g==b:
+        print("完了",m)
+        break
+    elif g < b:
+        l = m+1
+    elif g > b:
+        h=m-1
\ No newline at end of file