Output: false Example 4: Input: s = "([)]" Output: false Example 5: Input: s = "{[]}" Output: true Constraints: 1 <= s.length <= 104 s consists of parentheses only '()[]{}'. After trying to finish this problem,I did solve the question with a not very good way.And I f...
Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid. The brackets must close in the correct order,"()"and"()[]{}"are all valid but"(]"and"([)]"are not. 思路:对字符串S中的每一个字符i,如果i是左括号,则入栈。如...
20. Valid Parentheses (JAVA) Given a string 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 order...
import java.util.Stack; class Solution { public boolean isValid(String s) { Stack<Character> stack_match = new Stack<Character>(); for(int i=0;i
[Leetcode] Valid Parentheses 验证有效括号对 Valid Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" ...
Valid Parentheses - Java实现 文章目录 1. 题目描述: 2. 思路分析: 3. Java代码: 1. 题目描述: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by ...
Leetcode20 - Valid Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not....
An input string is valid if: 如果输入字符串有效 Open brackets must be closed by the same type of brackets. 必须使用相同类型的括号关闭左括号 Open brackets must be closed in the correct order. 必须用正确的顺序关闭左括号 Note that an empty string is also considered valid. ...
建议和leetcode 32. Longest Valid Parentheses 最长有效括号长度和 leetcode 678. Valid Parenthesis String 有效括号的判断 一起学习 代码如下: import java.util.ArrayList; import java.util.List; public class Solution { public boolean isValid(String s) ...
AI代码解释 Given a string containing just the characters'(',')','{','}','['and']',determineifthe input string is valid.The brackets must closeinthe correct order,"()"and"()[]{}"are all valid but"(]"and"([)]"are not.