题目描述 Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given 1->2-&g…

欢迎fork and star：Nowcoder-Repository-github 129. Sum Root to Leaf Numbers 题目 Given a binary tree containing dig…

  Given an array of numbers nums, in which exactly two elements appear only once and all the other e…

  Given a string which consists of lowercase or uppercase letters, find the length of the longest palindr…

题目： There are N gas stations along a circular route, where the amount of gas at station i …

1. 题目 Implement pow(x, n). 2. 思路 每次翻倍，如果当前翻倍的幂次在n的二进制位内，则乘入最后结果中，否则跳过继续。特殊场景较多，要特别考虑： 幂次n可能是负数，这是要注意转换为正数后，最后求…

  Write a function to generate the generalized abbreviations of a word. Example: Given word = "word"…

  Given n nodes labeled from 0 to n – 1 and a list of undirected edges (each edge is a pair of node…

  You are given an array of positive and negative integers. If a number n at an index is positive, then m…

  Given a binary array, find the maximum number of consecutive 1s in this array if you can flip at most o…

  Design a HashSet without using any built-in hash table libraries. To be specific, your design shou…

题目： Given an input string, reverse the string word by word. For example, Given s = “the sky is blue̶…