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view find_elements.m @ 814:3a5e635a93fd feature/burgers1d

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Add scheme for 1D Burgers equation - Add scheme for discretizing the 1D burgers equation, with spatially variable coefficients.
author Vidar Stiernstrom <vidar.stiernstrom@it.uu.se>
date Mon, 03 Sep 2018 14:50:27 +0200
parents 48b6fb693025
children
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% I = find_elements(a,b)
% Finds the index of elements a in b.
% a and b have to be in the same order.
function I = find_elements(a,b)
    I = [];

    j = 1;
    for i = 1:length(a)
        while b(j) ~= a(i)
            j = j + 1;
        end
        I(end+1) = j;
        j = j+1;
    end

    assert(length(I) == length(a),'Expected %d but got %d elements',length(a),length(I))
end