leetcode | Leetcode questions in Ruby and some helpers and test case | Learning library

 by   qqnc Ruby Version: Current License: No License

kandi X-RAY | leetcode Summary

kandi X-RAY | leetcode Summary

leetcode is a Ruby library typically used in Tutorial, Learning, Example Codes, LeetCode applications. leetcode has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

The source code is fetched using the tool leetcode-spider.

            kandi-support Support

              leetcode has a low active ecosystem.
              It has 4 star(s) with 1 fork(s). There are 1 watchers for this library.
              It had no major release in the last 6 months.
              leetcode has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of leetcode is current.

            kandi-Quality Quality

              leetcode has no bugs reported.

            kandi-Security Security

              leetcode has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              leetcode does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              leetcode releases are not available. You will need to build from source code and install.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of leetcode
            Get all kandi verified functions for this library.

            leetcode Key Features

            No Key Features are available at this moment for leetcode.

            leetcode Examples and Code Snippets

            No Code Snippets are available at this moment for leetcode.

            Community Discussions


            LeetCode TwoSum question returning buggy answer (C Implementation)
            Asked 2021-Jun-15 at 16:06

            Here is the question:



            Answered 2021-Jun-15 at 16:06

            You have to assign the number of elements of the array to return (2 in this case) to what the argument returnSize points at (*returnSize) to tell the judge system how large the array you returned is.

            Source https://stackoverflow.com/questions/67989752


            Why is the output an empty list, when I call a function that skips nodes in a linked-list?
            Asked 2021-Jun-15 at 10:52

            I am writing code to answer the following LeetCode question:

            Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head

            Example 1 ...


            Answered 2021-Jun-15 at 10:52

            Some issues in your code (as it was first posted):

            • return skipper(prev,curr) is going to exit the loop, but there might be more nodes to be removed further down the list. skipper only takes care of a sub sequence consisting of the same value, but it will not look beyond that. The list is not necessarily sorted, so the occurrences of the value are not necessarily grouped together.

            • Be aware that the variable prev in skipper is not the same variable as the other, outer prev. So the assignment prev=curr in skipper is quite useless

            • Unless the list starts with the searched value, dummy.next will always remain None, which is what the function returns. You should initialise dummy so it links to head as its next node. In your updated code you took care of this, but it is done in an obscure way (in the else part). dummy should just be initialised as the head of the whole list, so it is like any other node.

            In your updated code, there some other problems as well:

            • while prev.next: risks to be an infinite loop, because it continues while prev is not the very last node, but it also doesn't move forward in that list if its value is not equal to the searched value.

            I would suggest doing this without the skipper function. Your main loop can just deal with the cases where current.val == val, one by one.

            Here is the corrected code:

            Source https://stackoverflow.com/questions/67982630


            how can i check if a string contains another string throughout it
            Asked 2021-Jun-14 at 19:40

            I have two lists of strings and i want to check if the words within one list contain the strings within the other list throughout

            Here is an example of what i mean:



            Answered 2021-Jun-14 at 19:33


            Time and Space complexity of Palindrome Partitioning II
            Asked 2021-Jun-13 at 16:48

            So I was solving this LeetCode question - https://leetcode.com/problems/palindrome-partitioning-ii/ and have come up with the following most naive brute force recursive solution. Now, I know how to memoize this solution and work my way up to best possible with Dynamic Programming. But in order to find the time/space complexities of further solutions, I want to see how much worse this solution was and I have looked up in multiple places but haven't been able to find a concrete T/S complexity answer.



            Answered 2021-Jun-13 at 16:48

            Let's take a look at a worst case scenario, i.e. the palindrome check will not allow us to have an early out.

            For writing down the recurrence relation, let's say n = end - start, so that n is the length of the sequence to be processed. I'll assume the indexed array accesses are constant time.

            is_palindrome will check for palindromity in O(end - start) = O(n) steps.

            dfs_helper for a subsequence of length n, calls is_palindrome once and then has 2n recursive calls of lengths 0 through n - 1, each being called two times, plus the usual constant overhead that I will leave out for simplicity.

            So, we have

            Source https://stackoverflow.com/questions/67870431


            Unable to resolve memory read and segmentation fault error in C++
            Asked 2021-Jun-12 at 00:42

            I am coding a solution program for leetcode. I have encountered memory read errors and segmentation fault errors which I am unable to resolve. I have tried tinkering with the code to try and remove the errors.
            For example: in the numIslands function's last lines, I had tried declaring coordinates as an array rather than a pointer but the results did not change.
            *(last + 1) = *(coordinates + 1); does not seem to work at all in the numIslands function. I am totally blank about what to do next.



            Answered 2021-Jun-12 at 00:42

            I have ran it through gdb. After a bit of digging, the error is this:

            Source https://stackoverflow.com/questions/67943797


            Detecting signed integer multiplication overflow in C
            Asked 2021-Jun-09 at 21:03

            I'm writing this code for more than 3 hours already..

            I gave up about the overflow thing and tried to google and look it up on stackoverflow.

            I did not find any solution besides the one that I wrote in my code as you can see in lines 27-28 (where it returns 0). But this condition also does not work.



            Answered 2021-Jan-13 at 12:43

            The main thing you want to check for overflow is this:

            Source https://stackoverflow.com/questions/65695619


            Not being able to find an edge case in question "Process Tasks Using Servers" asked in leetcode weekly contest 243
            Asked 2021-Jun-09 at 06:41

            [link to the question] (https://leetcode.com/problems/process-tasks-using-servers/). The problem statement is clearly written in the provided link. I've highlighted a difference between my result and the expected result.

            I'm not able to figure out which edge case or condition I've missed?

            If the problem statement is still unclear then please do let me know.

            Update: The updated solution is in the comment section.



            Answered 2021-Jun-09 at 06:39

            A point to remember: Servers present inside runningServers heap have higher priority than the servers that are present in the pool serverId waiting for some task.

            Now, assume that we have 3 servers s1, s2, s3 having priority order s1 > s2 > s3, and 4 tasks t1, t2, t3, t4 with arrival time in increasing order. Also, assume that when we were about to allocate a server for t4, then by that time s2 and s3 got free.

            Now, ideally, we should choose server s2 for task t4 but the above-given algorithm is going to choose s3 for t4 because it's maintaining a min-heap property on the finish time of the servers. So it's important to first free all the servers that have finish time <= currTime, and then choose a new server for t4 from the pool.

            Now, what would happen if no server can be chosen from runningServer and we don't even have any server available in the pool serverId?

            solution: We'll have to wait for some time for one of the servers to get free. let's say a server is going to get free at time = x ms, and it is also possible that there are multiple servers that are going to get free at time = x ms.

            So, the final solution for the problem statement is:

            Source https://stackoverflow.com/questions/67790422


            Why does my operation of mod (%) on a 2 digit number return zero in python
            Asked 2021-Jun-07 at 07:00

            I've been trying to attempt some leetcode questions as a complete beginner, and a section requires me to convert/return the thousands, hundreds, tens and units place of a number.

            This is the code in python.



            Answered 2021-Jun-07 at 07:00

            you have a typo in these code block:

            Source https://stackoverflow.com/questions/67866749


            Does variable shadowing work on all compilers in C++?
            Asked 2021-Jun-06 at 17:08

            I ran this code on Leetcode.com but it prints random numbers. It works on my local machine, however. Anybody know if variable shadowing is supposed to work across all compilers?



            Answered 2021-Jun-06 at 15:46

            The shadowing is defined by the C++ standard, and must work on all conforming compilers.

            Your code prints garbage, because carry in carry + 1 reads the new variable (which isn't initialized at that point yet, causing UB), not the old one.

            Source https://stackoverflow.com/questions/67860922


            Using char to access vector
            Asked 2021-Jun-06 at 13:42

            I'm working my way through the leetcode problems in C++ for practice.

            I'm at problem number 3. I don't quite understand why you can access vector using char datatype.

            For example:



            Answered 2021-Jun-06 at 03:23

            Assuming your system is using ASCII or UTF-8 or something like that, 'a' == 97.

            So, this is equivalent to chars[97]++.

            Source https://stackoverflow.com/questions/67855515

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install leetcode

            You can download it from GitHub.
            On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
          • HTTPS


          • CLI

            gh repo clone qqnc/leetcode

          • sshUrl


          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link