ppslizejun的专栏

题目：You are given an array of integersnums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position.Re.

Given an array of integers temperatures represents the daily temperatures, return an array answer such that answer[i] is the number of days you have to wait after the ith day to get a warmer temperature. If there is no future day for which this is possible

Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.An input string is valid if:Open brackets must be closed by the same type of brackets.Open brackets must be closed in the correct..

题目链接：力扣Given two strings s and p, return an array of all the start indices of p's anagrams in s. You may return the answer in any order.An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using

题目：力扣Given a reference of a node in a connected undirected graph.Return a deep copy (clone) of the graph.Each node in the graph contains a value (int) and a list (List[Node]) of its neighbors.class Node { public int val; public List<No...