How to Formulate in CVX - 1D Total Variation Extension

7 
cvx_begin
variable x(n)
Objective = 0.5*sum_square(x-y)
for i=1:n-2
  Objective = Objective + norm([x(i)-x(i+1);x(i+1)-x(i+2)])
end
minimize(Objective)
% insert any other constraints
cvx_end
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