Valid Parentheses LeetCode Programming Solutions | LeetCode Problem Solutions in C++, Java, & Python [💯Correct]

Valid Parentheses LeetCode Problem | LeetCode Problems For Beginners | LeetCode Problems & Solutions | Improve Problem Solving Skills | LeetCode Problems Java | LeetCode Problems C++

Hello Programmers/Coders, Today we are going to share solutions to the Programming problems of LeetCode Solutions in C++, Java, & Python. At Each Problem with Successful submission with all Test Cases Passed, you will get a score or marks and LeetCode Coins. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.

In this post, you will find the solution for the Valid Parentheses in C++, Java & Python-LeetCode problem. We are providing the correct and tested solutions to coding problems present on LeetCode. If you are not able to solve any problem, then you can take help from our Blog/website.

Use “Ctrl+F” To Find Any Questions Answer. & For Mobile User, You Just Need To Click On Three dots In Your Browser & You Will Get A “Find” Option There. Use These Option to Get Any Random Questions Answer.

About LeetCode

LeetCode is one of the most well-known online judge platforms to help you enhance your skills, expand your knowledge and prepare for technical interviews. 

LeetCode is for software engineers who are looking to practice technical questions and advance their skills. Mastering the questions in each level on LeetCode is a good way to prepare for technical interviews and keep your skills sharp. They also have a repository of solutions with the reasoning behind each step.

LeetCode has over 1,900 questions for you to practice, covering many different programming concepts. Every coding problem has a classification of either EasyMedium, or Hard.

LeetCode problems focus on algorithms and data structures. Here is some topic you can find problems on LeetCode:

  • Mathematics/Basic Logical Based Questions
  • Arrays
  • Strings
  • Hash Table
  • Dynamic Programming
  • Stack & Queue
  • Trees & Graphs
  • Greedy Algorithms
  • Breadth-First Search
  • Depth-First Search
  • Sorting & Searching
  • BST (Binary Search Tree)
  • Database
  • Linked List
  • Recursion, etc.

Leetcode has a huge number of test cases and questions from interviews too like Google, Amazon, Microsoft, Facebook, Adobe, Oracle, Linkedin, Goldman Sachs, etc. LeetCode helps you in getting a job in Top MNCs. To crack FAANG Companies, LeetCode problems can help you in building your logic.

Link for the ProblemValid Parentheses– LeetCode Problem

Valid Parentheses– LeetCode Problem


Given a string s containing just the characters '('')''{''}''[' and ']', determine if the input string is valid.

An input string is valid if:

  1. Open brackets must be closed by the same type of brackets.
  2. Open brackets must be closed in the correct order.

Example 1:

Input: s = "()"
Output: true

Example 2:

Input: s = "()[]{}"
Output: true

Example 3:

Input: s = "(]"
Output: false


  • 1 <= s.length <= 104
  • s consists of parentheses only '()[]{}'.
Valid Parentheses– LeetCode Solutions
class Solution {
  bool isValid(string s) {
    stack<char> stack;

    for (const char c : s)
      if (c == '(')
      else if (c == '{')
      else if (c == '[')
      else if (stack.empty() || pop(stack) != c)
        return false;

    return stack.empty();

  int pop(stack<char>& stack) {
    const int c =;
    return c;
class Solution {
  public boolean isValid(String s) {
    Stack<Character> stack = new Stack<>();

    for (final char c : s.toCharArray())
      if (c == '(')
      else if (c == '{')
      else if (c == '[')
      else if (stack.isEmpty() || stack.pop() != c)
        return false;

    return stack.isEmpty();
class Solution:
  def isValid(self, s: str) -> bool:
    stack = []

    for c in s:
      if c == '(':
      elif c == '{':
      elif c == '[':
      elif not stack or stack.pop() != c:
        return False

    return not stack

1,469 thoughts on “Valid Parentheses LeetCode Programming Solutions | LeetCode Problem Solutions in C++, Java, & Python [💯Correct]”

  1. 仮想通貨による入出金も最近対応しているカジノが増え、今やほとんどのカジノで仮想通貨による決済が行えるようになりました。仮想通貨をすでに利用しているプレイヤーにとっては、仮想通貨によるオンラインカジノでの入出金方法は非常に簡単で反映時間はスピーディー、上限額も高いことからオンラインカジノのプレーに重宝だといえます。 オンラインカジノで最初にハードルになるのが入出金方法の選択です。クレジットカード以外は初めて見る送金サービスの名前が並んでいて、難しく思えますよね。 ー 国内最大級オンラインカジノスロットデータ情報・攻略サイト ー 入出金にはさまざまな選択肢がありますが、オンラインカジノでの入金や出金の仕組みを理解すれば面倒なことは1つもなく、スムーズに入出金が行えるようになります。 PayPalはオンラインギャンブルで広く使われていますか? 各オンラインカジノの出金取り扱い表です ここまで銀行振込に対応したオンラインカジノをまとめてきましたが、次に、「スロットプレイヤー向け」「リベート重視」「出金時間重視」など、条件や観点別で選ぶオンラインカジノランキングを紹介していきます。
    他の電子マネー決済サービスの出金は、同じ電子マネー決済サービスでの入金時のみ出金が可能ですが、Venusポイントでの出金は、クレジットカードで入金した場合でも利用出来ます。 どうしてもコンビニから入金したい事情がなければ、クレジットカードやエコペイズなどから直接ベラジョンカジノ入金する方が、スムーズに入金できます。 しかし、スマホで手軽に入金できることから、マッチベターが使えるオンラインカジノも少しずつ増えています。 山口宏 オンカジ ボンズ イーサリアムの未来 id=article_body itemprop=articleBody>Tiger Woods 草川啓造 カジノミー 入金 不要 14番ホールをグリーンに乗せた後はもちろん勝てると思っていたのですが。 各オンラインカジノが対応している入金方法と出金方法は以下の通り。便利な銀行振込に対応しているオンラインカジノもあるのでチェックしてみましょう。 遊雅堂は、 ベラジョンカジノの姉妹カジノ(ロンドン証券取引所の上場企業傘下)で信頼性◎ 日本人プレイヤー向けに作られた特別ブランド 遊べば遊ぶほどお得になるマイレージプログラムを導入 といった特徴を持つ、Breckenridge Curacao B.V.が所有・運営するオンラインカジノです。 このページでは、そんな遊雅堂の、 バンドルカード入金可否 バンドルカード入金の基本情報 バンドルカード入金方法 について、それぞれ詳しく解説していきます。 遊雅堂のバンドルカード入金可否 遊雅堂はVISA入金に対応し …

  2. buy amoxicillin without prescription: [url=]amoxicillin without prescription[/url] generic amoxil 500 mg

  3. To read actual dispatch, ape these tips:

    Look for credible sources: It’s eminent to safeguard that the report origin you are reading is reputable and unbiased. Some examples of good sources include BBC, Reuters, and The Fashionable York Times. Interpret multiple sources to get back at a well-rounded understanding of a particular statement event. This can improve you listen to a more ended paint and avoid bias. Be in the know of the perspective the article is coming from, as constant respected news sources can compel ought to bias. Fact-check the information with another source if a scandal article seems too staggering or unbelievable. Many times fetch unshakeable you are reading a fashionable article, as news can substitute quickly.

    Nearby following these tips, you can fit a more aware of news reader and more wisely apprehend the beget about you.

  4. The best online roulette casinos will give you regular bonuses and the best of these for online roulette are deposit bonuses. Look out for this type of bonus – these give you funds added to your account that you can use on any game on the site, including roulette. Additionally, for a player who only plays roulette, you should be looking for a welcome bonus and further bonuses, all of which are matched deposit offers, giving you additional funds to use for roulette games. The casino’s extensive gaming collection features an array of roulette variants, including innovative games like Zoom Roulette and High Limit Roulette. By partnering with leading game providers like Betsoft and Dragon Gaming, the site also offers a diverse range of other casino games, such as slots, blackjack, video poker, and live casino games.
    Yes, Canadian players can enjoy a variety of live dealer casino games with our top-reviewed mobile casinos. The best online casinos in Canada will carry live dealer games in addition to online slots and various progressive jackpots. Want to “test before you buy”? You can explore your preferred Canadian casino operator with the best free bonus deals without having to make any investments. As a result, to ensure the greatest experience, use info obtained in addition to our reviews of casino sites. CasinoBonusCa experts deliver a highly curated selection of the best free spins bonuses with no deposit required in 2023. Our team reviews online casinos with free spins bonuses based on a set of measurable quality criteria. Efficient customer support: The success of a Canadian online casino largely depends on its customer support service. If something goes wrong, you need immediate assistance. The best online casinos have a professional customer support service. Moreover, they offer multilingual customer support service 24 7.

  5. Totally! Declaration expos‚ portals in the UK can be overwhelming, but there are scads resources available to cure you think the perfect identical as you. As I mentioned formerly, conducting an online search with a view “UK news websites” or “British news portals” is a enormous starting point. Not one purposefulness this hand out you a thorough tip of hearsay websites, but it determination also provender you with a punter understanding of the in the air communication landscape in the UK.
    On one occasion you obtain a list of embryonic news portals, it’s important to value each one to shape which upper-class suits your preferences. As an benchmark, BBC News is known for its objective reporting of information stories, while The Keeper is known representing its in-depth criticism of partisan and popular issues. The Unconnected is known championing its investigative journalism, while The Times is known for its business and funds coverage. By way of arrangement these differences, you can pick out the information portal that caters to your interests and provides you with the hearsay you want to read.
    Additionally, it’s worth looking at neighbourhood despatch portals because proper to regions within the UK. These portals yield coverage of events and dirt stories that are fitting to the area, which can be firstly cooperative if you’re looking to charge of up with events in your local community. In behalf of event, local news portals in London contain the Evening Paradigm and the Londonist, while Manchester Evening Scuttlebutt and Liverpool Echo are popular in the North West.
    Comprehensive, there are many tidings portals readily obtainable in the UK, and it’s high-level to do your inspection to find the united that suits your needs. By means of evaluating the different news broadcast portals based on their coverage, dash, and article viewpoint, you can judge the a person that provides you with the most apposite and engrossing despatch stories. Decorous luck with your search, and I hope this information helps you reveal the practised dope portal since you!

  6. Pingback: asic miner
  7. The following example problems outline how to calculate Crypto Price. You can use a future value calculator with compounding calculation feature. There is a wide variety of future value calculators available on Indian websites. These calculators are simple to use and function on user input. Please note these calculations give only an approximate idea. Your real mining income can be quite different from those calculated by any of these calculators. Our revolutionary swipe-based trading system uses third party AI to auto-generate trading signals for you. This reduces the barrier to entry to trading by eliminating the many dozens of hours of study and research required to understand trading mechanics. While we still recommend doing this research, you can use Trender in the Beaxy mobile app to get quick and easy ETH signal suggestions, and signals for a variety of other cryptocurrencies. Swipe left to pass and swipe right to take the trade.
    New York City Hall signaled its commitment to crypto, encouraging municipal employees to convert their paychecks to tokens using U.S.-based crypto exchange Coinbase in early 2022 (before the chilling effects of Crypto Winter). Adams even boasted about converting his own cash for coins when he took office in January last year, taking his first three paychecks into bitcoin (and swallowing a $1,000 loss). Traders have a couple options at this broker, which has rolled out direct currency trading via TradeStation Crypto, with commission-based pricing for traders. Pricing is based on your 30-day crypto trading volume and whether your order is directly marketable. Normally pricing ranges from 0.025 percent of your order to 0.6 percent. Traders can also buy and sell Bitcoin futures as well as take advantage of substantial volume trading discounts.

  8. Given that the Bulls are looking to employ a more free-flowing and random offense this season, not having Lonzo Ball orchestrate the offense in transition will certainly hurt here. This much is especially true when Ball proved he had a bone to pick with the Pelicans, as he exploded for 17 points, 11 assists, 10 rebounds, and 3 steals triple-double performance in his one game against NOLA last year. The return of Zion will only make this an even more exciting matchup, as the Pelicans appear to be one of the fastest-rising teams in the NBA. The Clippers will beat the Pelicans today. They’ll be hungry coming off of a win that the whole team realistically knows they would have won if they were healthy, and are a much better team than the Pelicans. They’re a much better team even with these injuries.
    PACQUIAO vs. UGAS Premier Boxing Champions acted quickly and moved Yordenis Ugas up from the undercard to defend his WBA title against the iconic Pacquiao at the T-Mobile Arena in Las Vegas on Saturday. Sign up with FanDuel Michigan by clicking here and grab 30 1 boosted odds on either Manny Pacquiao or Yordenis Ugas. But the key for Ugas in this bout was controlling distance with a stiff left jab, countering over the top of Manny Pacquiao’s right jab and landing with great effect. Conor McGregor said it best: precision beats power, and timing beats speed. Ugas had both tonight. If you like Pacquiao, I’d avoid the money line and just go with him to win by decision at +120. If you think Ugas could score a Juan Manuel Marquez-like knockout on Pacquiao, you could get him by stoppage at +1500. Even if you think Pacquiao will win, that’s a good bet on which to wager a small amount.

  9. reputable indian online pharmacy: india online pharmacy – indian pharmacy paypal
    best online pharmacies in mexico [url=]mexican rx online[/url] pharmacies in mexico that ship to usa

  10. mexican pharmaceuticals online: mexican mail order pharmacies – medicine in mexico pharmacies
    mexico pharmacies prescription drugs [url=]best online pharmacies in mexico[/url] medication from mexico pharmacy

  11. lisinopril 60 mg daily [url=]Lisinopril 10 mg Tablet buy online[/url] lisinopril 5 mg brand name in india

  12. farmacias online seguras en espaГ±a [url=]п»їfarmacia online[/url] farmacia envГ­os internacionales