rooted trees, those with minimum height are called ...
For a undirected graph with tree characteristics, we can choose any node as the root. The result graph is then a rooted tree. Among all possible rooted trees, those with minimum height are called mini ...
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rooted trees, those with minimum height are called ...
rooted trees, those with minimum height are called m ...
Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all un ...
For example, givens = "leetcode",dict = ["leet", "cod ...
Unique Binary Search Trees II Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example, Given n ...
题目描述: 题目链接:64 Minimum Path Sum 问题是要求在一个全为正整数的 m X n 的矩阵中, 取一条从左上为起点, 走到右下为重点的路径, (前进方向只能向左或者向右),求一条所经过元素和最小的一条路径。 其实,题目已经给出了提示:, 动态规划应该是最直接的解法 ...
终于刷完了leetcode的前250道题的easy篇。好吧,其实也就60多道题,但是其中的套路还是值得被记录的。 至于全部code,请移步github,题目大部分采用python3,小部分使用C,如有问题和建议,欢迎指正。 String 有一个string库,可以返回各种string ...
碎碎念: 最近终于开始刷middle的题了,对于我这个小渣渣确实有点难度,经常一两个小时写出一道题来。在开始写的几道题中,发现大神在discuss中用到回溯法(Backtracking)的概率明显增大 ...