creating array based in another array

Hi, i have an array nx1 (refer array 1 as below) and i want to create 2nd array based on the 1st array as follow:

array 1:

1
2
3
4
5

For example:

Loop 1: read 1st index array 1 which is 1, array 2 will be

array 2: 2 3 4 5

Loop 2: read 2nd index array 1 which is 2, array 2 will be

array 2: 1 3 4 5

Loop 3: read 3rd index array 1 which is 3, array 2 will be

array 2: 1 2 4 5

and so forth.

Is it possible without using for loops?

Answer 1

[Walter Roberson]

L = length (A);
temp = repmat(A, L, 1);
temp(1:L+1:end) = [] ;
B = reshape(temp,L-1,[]);

[Khairul Nur]

tq walter :)

Answer 2

[Fabio Freschi]

Here a possible solution, where all arrays you want are in the columns of matrix a2

% number of entries in array 1
n = 5;
% create array 1
a1 = (1:n).';
% create matrix a2 as column vector
a2 = repmat(a1,n,1)
% remove diagonal entries
a2(1:n+1:n^2) = [];
% reshape a2 to obtain the matrix
a2 = reshape(a2,n-1,n);

The output is

a2 =

     2     1     1     1     1
     3     3     2     2     2
     4     4     4     3     3
     5     5     5     5     4

[Khairul Nur]

hi...ur code also working.. thank u for the code