Couples Seated in a Row

clear all

freq = 0;
total = 100000;
for i = 1:total
    seating_arrangement = randperm(8);
    couple_count = 0;
    for j = 1:7
        if (seating_arrangement(j+1) == 1 && seating_arrangement(j) == 2)
            couple_count = couple_count + 1;
            continue;
        end
        if (seating_arrangement(j+1) == 2 && seating_arrangement(j) == 1)
            couple_count = couple_count + 1;
            continue;
        end

        if (seating_arrangement(j+1) == 3 && seating_arrangement(j) == 4)
            couple_count = couple_count + 1;
            continue;
        end
        if (seating_arrangement(j+1) == 4 && seating_arrangement(j) == 3)
            couple_count = couple_count + 1;
            continue;
        end
        %{
        if (seating_arrangement(j+1) == 5 && seating_arrangement(j) == 6)
            couple_count = couple_count + 1;
            continue;
        end
        if (seating_arrangement(j+1) == 6 && seating_arrangement(j) == 5)
            couple_count = couple_count + 1;
            continue;
        end
        if (seating_arrangement(j+1) == 7 && seating_arrangement(j) == 8)
            couple_count = couple_count + 1;
            continue;
        end
        if (seating_arrangement(j+1) == 8 && seating_arrangement(j) == 7)
            couple_count = couple_count + 1;
            continue;
        end
        %}
    end
    if (couple_count >= 2)
        freq = freq + 1;
    end
end
prob = freq / total