setdiffFS

setdiffFS finds the positive integers in a which are not present in the positive integers in b

expand all in page

Syntax

Description

example

c =setdiffFS(a, b) Example of use of setdiffFS.

Examples

expand all

  • Example of use of setdiffFS.

    • Define two vectors (containing positive integers) with values in common. 

    A = [3 6 2 1 5 1 1]; 
    B = [2 4 6];
    C=setdiffFS(A,B);
    disp(C);
         1
     3
     5

    Related Examples

    expand all

  • Time comparison with setdiff.

    • 20000 calls to setdiff and to setdiffFS. 

    % Analysis of computational time.
    n=100;
    nsimul=20000;
    tSETDIFF=0;
    tSETDIFFFS=0;
    for j=1:nsimul
    a=randi(n,[300,1]);
    b=randi(n,[40,1]);
    tsetdiff = tic;
    c=setdiff(a,b);
    tSETDIFF = tSETDIFF + toc(tsetdiff);
    tsetdiffFS = tic;
    cFS=setdiffFS(a,b);
    tSETDIFFFS = tSETDIFFFS + toc(tsetdiffFS);
    if ~isequal(c,cFS)
    error('FSDA:setdiffFS:WrongOutput','c and cFS are different')
    end
    end
    disp(array2table([tSETDIFF tSETDIFFFS],'VariableNames',{'setdiff time' 'setdiffFS time'}))

    Input Arguments

    expand all

    a — vector containing positive integer elements. Vector.

    A vector of length na containing positive integer numbers.

    Data Types: single| double

    b — vector containing positive integer elements. Vector.

    A vector of length nb containing positive integer numbers.

    Data Types: single| double

    Output Arguments

    expand all

    c —Positive integer elements thare are on a but not in b. vector

    Column vector.

    Note that the elements of c contain no repetitions and are sorted.

    References

    Riani, M., Perrotta, D. and Cerioli, A. (2015), The Forward Search for Very Large Datasets, "Journal of Statistical Software"

    See Also

    This page has been automatically generated by our routine publishFS