classSolution{publicStringlongestPalindrome(Strings){if(s==null||s.length()<1)return"";intstart=0;intend=0;for(inti=0;i<s.length();i++){intlen1=expandAroundCenter(s,i,i);//以一个字符为中心intlen2=expandAroundCenter(s,i
我们可以继续优化,判断字符在不在一个字符串,我们可以将已有的字符串存到 Hash 里,这样的时间复杂度是 O(1),总的时间复杂度就变成了 O(n)。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public class Solution { public int lengthOfLongestSubstring(String s) { int n = s.length(); Set<...
class Solution { public int evalRPN(String[] tokens) { switch (tokens[i]){ case "+": numsStack.push(num2+num1); break; case "-": numsStack.push(num2-num1); break; case "*": numsStack.push(num2*num1); break; case "/": numsStack.push(num2/num1); break; } } } Input ...
importjava.util.Arrays;importjava.util.BitSet;publicclassSolution {/***@paramargs*/publicstaticvoidmain(String[] args) {//TODO Auto-generated method stubintnums1[] = {1,2,3,2,4,2,5,2};intnums2[] = {2,3,5,6};intnum[] =intersection(nums1, nums2);for(inti=0;i<num.length;i+...
#TitleSolutionDifficultyAnalysis 306 Additive Number Java Medium 305 Number of Islands II Java Hard 304 Range Sum Query 2D - Immutable Java Medium 303 Range Sum Query - Immutable Java Easy 302 Smallest Rectangle Enclosing Black Pixels Java Medium 300 Longest Increasing Subsequence Java Medium...
1. Description: Notes: 2. Examples: 3.Solutions: /** * Created by sheepcore on 2018-12-24 */ class Solution { public int[] nextGreaterElement(int[] nums1, int[] nums2) { int l1 = nums1.length, l2 = nums2.length; int[] res = new int[l1]; ...
1Branch2Tags Code This branch is9026 commits behinddoocs/leetcode:main. README CC-BY-SA-4.0 license 介绍 本项目包含LeetCode、《剑指 Offer(第 2 版)》、《程序员面试金典(第 6 版)》等题目的相关题解。所有题解均由多种编程语言实现,包括但不限于:Java、Python、C++、JavaScript、C#、Go,日常更新。
from collectionsimportdefaultdictclassSolution:defmaxPoints(self,points):""":type points:List[Point]:rtype:int""" slopes,result=defaultdict(int),0fori,point1inenumerate(points):slopes.clear()duplicate=1for_,point2inenumerate(points[i+1:]):ifpoint1.x==point2.x and point1.y==point2.y:dup...
return arr[tail-1]; } 不懂atoi函数的可以看看这篇文章 Java语言实现代码 class Solution {//这个方法是判断是否为运算符的 private boolean isOperation(String x) {if(x.equals("+") || x.equals("-") || x.equals("*") || x.equals("/")) {return true; ...
leetcode题解pdf java leetcode题目及答案pdf,面试算法题dfs相关全排列#include<bits/stdc++.h>usingnamespacestd;constintN=10;//用一个path数组来存储每次到底层的路径intpath[N];//用一个布尔数组来存储每次已经遍历的点,默认是falseboolst[N];intn;//u表示当前的