Medium 不知道做过多少回了，有时还是会出一些小bug. 详细讲解：https://www.youtube.com/watch?v=XSmgFKe-XYU public class Solution { public…

My code: public class Solution { public int maxProduct(String[] words) { int max = 0; int len = words.length; …

/* * 255. Verify Preorder Sequence in Binary Search Tree Total Accepted: 8634 Total Submissions: 23097 Difficu…

题目 Find the contiguous subarray within an array (containing at least one number) which has the largest sum. Fo…

  Given a string s, partition s such that every substring of the partition is a palindrome…

  We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You …

Pow(x, n) Implement pow(x, n) 递归法 复杂度 时间 O(logN) 空间 O(logN) 思路 通过一点点数学推导我们可以知道，如果n是偶数$$ x^nx^n = x^{2n}$$如果n是奇…

Given a string representing arbitrarily nested ternary expressions, calculate the result of the expression. Yo…

前言 如果编程只是重复敲一些没有价值代码， 那不是我所向往的编程生活。 如果生活只是重复做一些没有枯燥无味的事情， 那不是我所向往的生活。 所以，我们始终要为心底坚持的美好而努力。 本篇目录 两数相加 无重复字符的最长子…

My code: public class Solution { public boolean isNumber(String s) { int i = 0; int e = s.length() - 1; while …

题目 You are given a binary tree in which each node contains an integer value. Find the number of paths that sum…

  Find the contiguous subarray within an array (containing at least one number) which has the largest sum…