力扣leetcode-cn.com/problems/basic-calculator/ 题目描述 给你一个字符串表达式 s ,请你实现一个基本计算器来计算并返回它的值。 示例1: 输入:s = "1 + 1" 输出:2 示例2: 输入:s = " 2-1 + 2 " 输出:3 示例3: 输入:s = "(1+(4+5+2)-3)+(6+8)" 输出:23提示...
Space: O(n). AC Java: 1classSolution {2publicintcalculate(String s) {3if(s ==null|| s.length() == 0){4return0;5}67s = s.replaceAll("\\s+", "");8intn =s.length();9intnum1 = 0;10into1 = 1;11intnum2 = 1;12into2 = 1;13Stack<Integer> stk =newStack<>();1415for...
AC Java: 1classSolution {2publicintcalculate(String s) {3if(s ==null|| s.length() == 0){4return0;5}67s = s.replaceAll("\\s+", "");8intnum1 = 0;9into1 = 1;10intnum2 = 1;11Stack<Integer> stk =newStack<>();12intn =s.length();13for(inti = 0; i < n; i++){...
力扣224.基本计算器 力扣leetcode-cn.com/problems/basic-calculator/ 题目描述 实现一个基本的计算器来计算一个简单的字符串表达式的值。 字符串表达式可以包含左括号 ( ,右括号 ),加号 + ,减号 -,非负整数和空格 。 示例1: 输入: "1 + 1" 输出: 2 示例2: ...
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算法解决。大家加油!:) 0 stars 718 forks ...
public class Solution { /** * https://leetcode.com/discuss/55304/java-easy-understand-o-n-solution * * a, b, c stands for the next number to multiply 2 or 3 or 5 respectively * for example, c always stands for the index of number series starting from 1 and each element will mult...
Github Page Please Donate leetcode TODO Evaluate the Time and Space complexity of each solution Proof the code's correctness if needed Find better solutions Rewrite code with Java8 lambdaAbout leetcode Solutions.java 250 / 269 (Algorithms) leetcode.tgic.me/ Resources Readme Activity Stars ...
所有内容都来自我的GitHub: https://github.com/awangdev/LintCode Java Algorithm Problems 程序员的一天 从开始这个Github已经有将近两年时间, 很高兴这个repo可以帮到有需要的人. 我一直认为, 知识本身是无价的, 因此每逢闲暇, 我就会来维护这个repo, 给刷题的朋友们一些我的想法和见解. 下面来简单介绍一下...
This might be underrated post but very useful, i have added all heavily used DS for Java. Map 2. ArrayList 3. Array[ ] 4. Stack 5. Queue / PriorityQueue 6. String 7. Set Basic Idea to understand : Map -> V get(k1) get : method, ...
Java Python JavaScript TypeScript C++ Scala Blog Project: leetcode-editor (GitHub Link) leetcode-editorEnglish Document 中文文档 Useful Links Login Help Custom Code (demo) IntroductionDo Leetcode exercises in IDE, support leetcode.com and leetcode-cn.com, to meet the basic needs of doing ...