Nalido Blog

一生想做一条无忧无虑的哈士奇

[leetcode] 二叉树的非递归遍历

https://leetcode.com/problems/binary-tree-inorder-traversal/ 迭代框架 while(node != null || !stack.isEmpty()) { while (node != null) { stack.push(node); // 先序遍历 node = nod...

Posted by Nalido on January 26, 2021

[python3] 打开文件open函数的坑

Python3中打开文件的open函数和python2不同,经常会导致各种莫名其妙的错误. 例如读取json时,以下代码在Python2中可以正常运行. with open(jsFile, "a+") as f: try: dct = json.load(f) except ValueError as e: print('load json ...

Posted by Nalido on April 27, 2018

[python] 使用多个分隔符分割字符串

Python中字符串分割成数组，一般用split。但是split只支持单个分隔符的分割，如果想要同时使用多个分隔符，可以使用re模块。

Posted by Nalido on April 27, 2018