LeetCode

Pros: Cool Platform, features were helpful. I liked the product for the week or two that I managed to use it.

Cons: Took a week and a half to respond to a request to cancel my $35/month account, only to refuse to do it on their end. They provided instructions to find the cancellation in their interface; it was so well hidden that it was nearly unfindable without the instructions.

Overall: This is what they finally wrote:

Thank you for reaching out to LeetCode Technical Support!

"You can cancel your current Premium subscription in your Manage Subscription page by following the instruction in this Support Article. You must cancel your subscription before your renewal date to avoid the next billing.

According to our refund policy(leetcode.com/terms/), after cancellation, your subscription will remain active until the end of the current billing period and you will have continued access to your subscription for the remainder of that period (unless your access is suspended or terminated as set forth below) and we are unable to provide a refund for your monthly subscription."

Pros: 1. LeetCode helps in preparing for competitive codings in a gradual manner.
2. The questions are crafted in a way that it teaches fundamental concepts as well as problem-solving.
3. The question helps in understanding all the concepts of Data Structures and Algorithms to crack any interview.

Cons: 1. I have been using LeetCode to polish my coding skills from a long time, and I haven't found any con with the platform or with the method of teaching so far.

Overall: LeetCode is a great platform to prepare for interviews or just to polish the competitive coding skills. All the questions are designed to explain the core concept of programming and DSA.

Pros: - It is one of the best sites to practice competitive coding.
- It supports multiple languages like Java, C, C++.
- It has a great community to help you if you get stuck at any question.

Cons: - No con whatsoever, Leet Code is a great platform that provides value for your money.

Overall: Overall, Leet Code is a great website to help you kick-start your competitive programming journey with some practice question that polish your competitive coding skills.

Pros: I super love the Solution and Discuss. Systematic knowledge is more important than just crack the problems, which I can learn from Solution. And I see so many brilliant ideas from Discuss.

Cons: I wish it has lifetime membership and I will definitely and seriously consider about it.

Overall: I start using it since 2018, it changes my way of studying and coding. I also use other free similar website, but LeetCode is the best, because of the rich resources.