integers_matlab

function ans = integers(str)

    ans = [];
    h = "";
    flag = 0;
    i = 1;
    settlers = [' ', ',', ';'];

    while (i <= length(str))

        if ((str(i) >= '0') && (str(i) <= '9'))
            if ((flag == 1) || (i == 1))
                h = [h str(i)];
                flag = 1;
            elseif ((flag == 0) && (ismember(str(i-1), settlers)))
                h = [h str(i)];
                flag = 1;
            else
                flag = 0;
                h = "";
            end

        elseif ((ismember(str(i), settlers)) && (length(h) > 0) && (flag == 1))
            flag = 0;
            ans = [ans; str2num(h)];
            h = "";
        else
            flag = 0;
            h = "";
        end
        i+=1;
    end

    if (length(h) > 0)
        ans = [ans; str2num(h)];
    end
end