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]
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+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+#9
+high=len(num_list)-1
+low=0
+r=20
+while low<=high:
+    m=(high+low)//2
+    g=num_list[m]
+    if g==r:
+        print('找到了！')
+        print(m)
+        break
+    elif g>r:
+        high=m-1
+    elif g<r:
+        low=m+1
\ No newline at end of file