nums为一个list，不需要判断为空就可以做join

2019-05-22 09:27:37 +08:00 · 2019-05-22 09:27:37 +08:00 · b237d4a7ad
commit b237d4a7ad
parent 3b23b938e0
1 changed files with 1 additions and 4 deletions
--- a/python/06_linkedlist/singly_linked_list.py
+++ b/python/06_linkedlist/singly_linked_list.py
@ -106,10 +106,7 @@ class SinglyLinkedList:
        while current:
            nums.append(current.data)
            current = current._next
-        if len(nums) > 0:
-            return "->".join(str(num) for num in nums)
-        else:
-            return ""
+        return "->".join(str(num) for num in nums)

    # 重写__iter__方法，方便for关键字调用打印值
    def __iter__(self):