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LeetCode LLC, doing business as LeetCode, is an online platform for coding interview preparation. The platform provides coding and algorithmic problems intended for users to practice coding . [ 1 ] LeetCode has gained popularity among job seekers in the software industry and coding enthusiasts as a resource for technical interviews and coding ...
The largest known prime number is 2 136,279,841 − 1, a number which has 41,024,320 digits when written in the decimal system. It was found on October 12, 2024, on a cloud-based virtual machine volunteered by Luke Durant, a 36-year-old researcher from San Jose, California, to the Great Internet Mersenne Prime Search (GIMPS).
LeetCode: LeetCode has over 2,300 questions covering many different programming concepts and offers weekly and bi-weekly contests. The programming tasks are offered in English and Chinese. Project Euler [18] Large collection of computational math problems (i.e. not directly related to programming but often requiring programming skills for ...
Stirling numbers of the second kind, which count the number of ways to partition a set of n elements into k nonempty subsets: [3] {} = ...
It is possible to find the maximum clique, or the clique number, of an arbitrary n-vertex graph in time O (3 n/3) = O (1.4422 n) by using one of the algorithms described above to list all maximal cliques in the graph and returning the largest one. However, for this variant of the clique problem better worst-case time bounds are possible.
A different summation formula represents each Bell number as a sum of Stirling numbers of the second kind B n = ∑ k = 0 n { n k } . {\displaystyle B_{n}=\sum _{k=0}^{n}\left\{{n \atop k}\right\}.} The Stirling number { n k } {\displaystyle \left\{{n \atop k}\right\}} is the number of ways to partition a set of cardinality n into exactly k ...
The second depth-first search is on the transpose graph of the original graph, and each recursive exploration finds a single new strongly connected component. [2] [3] It is named after S. Rao Kosaraju, who described it (but did not publish his results) in 1978; Micha Sharir later published it in 1981. [4]
All sphenic numbers are by definition squarefree, because the prime factors must be distinct.. The Möbius function of any sphenic number is −1.. The cyclotomic polynomials (), taken over all sphenic numbers n, may contain arbitrarily large coefficients [1] (for n a product of two primes the coefficients are or 0).