Help with sketching the signal

[TorrieTTT]

I've been trying to solve the question but am not getting the desired answer.
I tried separating the components and solving but still no luck. Plese help.

 

[salmanshu]

I've been trying to solve the question but am not getting the desired answer.
I tried separating the components and solving but still no luck. Plese help.

View attachment 171730

put values from -6 to 6 in n and change value of k according to n. x[-6]=4 ,x[-5]=2,and change values by simply puting values in question.

 

[KlausST]

Hi,

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[kaz1]

put values from -6 to 6 in n and change value of k according to n. x[-6]=4 ,x[-5]=2,and change values by simply puting values in question.

This is my guess attempt:

clc;clear;
for n = 0:12
    sum = 0;
    for k = -6:5
        if n < 3*k
            u1 = 0;
        else
            u1 = 1;
        end
        if n < 4+3*k
            u2 = 0;
        else
            u2 = 1;
        end
        sum = sum + (u1 - u2);
    end
    y(n+1) = 2*sum;
end

x = -6:6;
stem(x,y)