杨领well的专栏

LeetCode: Weekly Contest 92 题解列表 1. LeetCode: 868. Transpose Matrix 题解 第一题照例是签到题， 根据矩阵的转置定义，行列互换。 2.LeetCode: 866. Smallest Subtree with all the Deepest Nodes 题解 关于二叉树的题，照例用递归分治思想求解。 3. LeetCode...

LeetCode: 868. Transpose Matrix 题目描述 Given a matrix A, return the transpose of A. The transpose of a matrix is the matrix flipped over it’s main diagonal, switching the row and column indices of th...

LeetCode: 866. Smallest Subtree with all the Deepest Nodes 题目描述 Given a binary tree rooted at root, the depth of each node is the shortest distance to the root. A node is deepest if it has the larg...

LeetCode: 867. Prime Palindrome 题目描述 Find the smallest prime palindrome greater than or equal to N. Recall that a number is prime if it’s only divisors are 1 and itself, and it is greater than 1. ...

LeetCode: 865. Shortest Path to Get All Keys 题目描述 We are given a 2-dimensional grid. "." is an empty cell, "#" is a wall,"@" is the starting point, (&am