Using a for loop for legend plots

I was able to make each point a different color in my plot. I want to do the same thing for the legend. How can I put the legend for each data point using a for loop?

Here is my code.

Z=[3 1 7];

for i=1:length(Z)

A(i)=Z(i)+2;

B(i)=Z(i)-7;

C(i)=Z(i)+4;

col=['g' 'b' 'r'];

for j:length(col)

x=[1 2 3];

y(:,i)=[A(i) B(i),C(i)];

subplot(3,1,i)

plot(x,y(:,i),'color',col(i))

end end

Answer 1

[Amit]

Z=[3 1 7];

for i=1:length(Z)

      A(i)=Z(i)+2;

      B(i)=Z(i)-7;

      C(i)=Z(i)+4;

      col=['g' 'b' 'r'];
      legendtext = ['a' 'b' 'c'];  %%Add your legend text

      for j=1:length(col)

          x=[1 2 3];

          y(:,i)=[A(i) B(i),C(i)];

          subplot(3,1,i);

          plot(x,y(:,i),'color',col(i))
          legend(legendtext(i));

      end
  end