64. Minimum Path Sum 题目 Given a m x n grid filled with non-negative numbers, find a path from top left to bott…

欢迎fork and star：Nowcoder-Repository-github 106. Construct Binary Tree from Inorder and Postorder Traversal 题目 …

  Write a SQL query to get the second highest salary from the Employee table. +----+--------+ |…

题目描述 Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. Ac…

Implement a trie with insert, search, and startsWith methods. Example: Trie trie = new Trie(); trie.insert("ap…

25. Reverse Nodes in k-Group 题目 Given a linked list, reverse the nodes of a linked list k at a time and return…

  The Trips table holds all taxi trips. Each trip has a unique Id, while Client_Id and Driver_I…

  In a forest, each rabbit has some color. Some subset of rabbits (possibly all of them) tell you how man…

题目描述 Given a sorted array and a target value, return the index if the target is found. If not, return the inde…

Multiply Strings Given two numbers represented as strings, return multiplication of the numbers as a string. N…

  A sequence of number is called arithmetic if it consists of at least three elements and if the differen…

1. 题目 Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is …