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  2. Floyd's triangle - Wikipedia

    en.wikipedia.org/wiki/Floyd's_triangle

    The numbers along the left edge of the triangle are the lazy caterer's sequence and the numbers along the right edge are the triangular numbers. The n th row sums to n ( n 2 + 1)/2 , the constant of an n × n magic square (sequence A006003 in the OEIS ).

  3. Box-drawing characters - Wikipedia

    en.wikipedia.org/wiki/Box-drawing_characters

    The hardware code page of the original IBM PC supplied the following box-drawing characters, in what DOS now calls code page 437. This subset of the Unicode box-drawing characters is thus included in WGL4 and is far more popular and likely to be rendered correctly:

  4. 3-dimensional matching - Wikipedia

    en.wikipedia.org/wiki/3-dimensional_matching

    3-dimensional matchings. (a) Input T. (b)–(c) Solutions. In the mathematical discipline of graph theory, a 3-dimensional matching is a generalization of bipartite matching (also known as 2-dimensional matching) to 3-partite hypergraphs, which consist of hyperedges each of which contains 3 vertices (instead of edges containing 2 vertices in a usual graph).

  5. CYK algorithm - Wikipedia

    en.wikipedia.org/wiki/CYK_algorithm

    The node is linked to the array elements that were used to produce it, so as to build the tree structure. Only one such node in each array element is needed if only one parse tree is to be produced. However, if all parse trees of an ambiguous sentence are to be kept, it is necessary to store in the array element a list of all the ways the ...

  6. 2–3 tree - Wikipedia

    en.wikipedia.org/wiki/2–3_tree

    In computer science, a 2–3 tree is a tree data structure, where every node with children (internal node) has either two children (2-node) and one data element or three children (3-node) and two data elements. A 2–3 tree is a B-tree of order 3. [1] Nodes on the outside of the tree have no children and one or two data elements.

  7. Subset sum problem - Wikipedia

    en.wikipedia.org/wiki/Subset_sum_problem

    sort U i in ascending order make L empty let y be the smallest element of U i add y to L for each element z of U i in increasing order do // Trim the list by eliminating numbers close to one another // and throw out elements greater than the target sum T. if y + ε T/n < z ≤ T then y = z add z to L return the largest element in L.

  8. IBM Machine Code Printer Control Characters - Wikipedia

    en.wikipedia.org/wiki/IBM_Machine_Code_Printer...

    By convention the position on a sheet of paper where the first print line has to be written is associated with Channel 1. For example, if the first line of text has to always be on physical line 3 for a given form, then the channel 1 hole has to be punched in line 3 of the carriage control tape.

  9. Iterative Stencil Loops - Wikipedia

    en.wikipedia.org/wiki/Iterative_Stencil_Loops

    In each timestep, all array elements are updated. [2] Using neighboring array elements in a fixed pattern (the stencil), each cell's new value is computed. In most cases boundary values are left unchanged, but in some cases (e.g. LBM codes) those need to be adjusted during the computation as well. Since the stencil is the same for each element ...