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[LeetCode] 430. Flatten a Multilevel Doubly Linked List
You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which may or may not point to a ...
分类:其他好文   时间:2020-07-11 10:04:24    阅读次数:84
0430. Flatten a Multilevel Doubly Linked List (M)
Flatten a Multilevel Doubly Linked List (M) 题目 You are given a doubly linked list which in addition to the next and previous pointers, it could have a ...
分类:其他好文   时间:2020-07-11 09:25:02    阅读次数:50
430. Flatten a Multilevel Doubly Linked List
You are given a doubly linked list which in addition to the next and previous pointers, it could have a child pointer, which may or may not point to a ...
分类:其他好文   时间:2020-07-11 09:24:32    阅读次数:64
114. 二叉树展开为链表-二叉树,dfs-中等难度
题目描述 给定一个二叉树,原地将它展开为一个单链表。 例如,给定二叉树 1 / \ 2 5 / \ \3 4 6将其展开为: 1 \ 2 \ 3 \ 4 \ 5 \ 6 来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/flatten-binary ...
分类:其他好文   时间:2020-07-05 19:16:52    阅读次数:57
★二维列表--->一维列表
由于从站点获取到的数据格式存在 二维列表,所以提取出变成一维列表的集中方法记录: 1、列表推导式 ab = [[1,2,3], [4,5], [6,7,8]] print([i for item in ab for i in item]) 2、flatten from compiler.ast im ...
分类:其他好文   时间:2020-07-05 15:53:10    阅读次数:63
迭代器与生成器 (05)
用 yield 实现 Pipline 方式处理压缩文件数据, 多层目录遍历, Flatten 嵌套序列实现等 ...
分类:其他好文   时间:2020-07-01 00:13:50    阅读次数:45
0341. Flatten Nested List Iterator (M)
Flatten Nested List Iterator (M) 题目 Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list ...
分类:其他好文   时间:2020-06-28 09:23:02    阅读次数:45
[记录点滴] 一个Python中实现flatten的方法
之前如果想使用flatten,一般借助于numpy.ndarray.flatten。 但是 flatten只能适用于numpy对象,即array或者mat,普通的list列表不适用。 最近找到一个轻便的办法如下: from itertools import chain # flatten print ...
分类:编程语言   时间:2020-06-27 09:34:09    阅读次数:74
数组扁平化:(多维数组 -> 一维数组)
1.转成字符串,利用正则的方法 let ary = [1, [2, [3, [4, 5]]], [6, 7, [8, 9, [11, 12]], 10]]; //=>[1,2,3,4,5,6] let str = JSON.stringify(ary); //=>第一种处理 // console.l ...
分类:编程语言   时间:2020-06-22 01:43:48    阅读次数:63
114.二叉树展开为链表
class TreeNode: def __init__(self, val=0, left=None, right=None): self.val = val self.left = left self.right = rightclass Solution: def flatten(self, ...
分类:其他好文   时间:2020-06-20 21:12:01    阅读次数:58
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