how to find the indexing for the following code.

clear all;
clc
A=[1 2;
    3 4;
    5 6;
    7 8;
    9 10;
    11 12;
    13 14;
    15 16];
C=size(A,1)
B=1:3
D= randi(C,1)

I want to perform the randi(C,1) with respect to 1st index of B followed by 2nd index ,then 3rd index.

Could anyone please help me on this.

Answer 1

[KSSV]

A=[1 2;
    3 4;
    5 6;
    7 8;
    9 10;
    11 12;
    13 14;
    15 16];
C=size(A,1)
B=1:3
for i = B
    D= randi(C,i)
end

[jaah navi]

ok.

B=1 2 3;

But i want to have the result in the following manner

In for loop i=1

D=randi(C,1)

=8 % D should displays the single number with respect to first element of i

i=2

D=randi(C,2)

=5 % D should display the single number with respect to second element of i but not in 2x2.

i=3

D=randi(C,3)

= 4%D should display the single number with respect to third element of i but not in 3x3.

Could you please help me on this.