How to convert row to matrix with below format????

I need to convert row to matrix. For example, A=[1 2 3 4 5]

Need answer like this, Ans=[1 0 0 0 0; 0 1 0 0 0; 0 0 1 0 0; 0 0 0 1 0; 0 0 0 0 1]

[Stephen23]

@Yuvaraj V: you have really specified how to generate the outpour matrix from the input vector. What would you expect the output from this vector to be?:

A = [5,1,1,4]

[Stephen23]

@Yuvaraj V: thank you, that is clearer now for me. For a simple solution see my answer.

[Yuvaraj Venkataswamy]

@Stephen Cobeldick: For your input A=[5;1;1;4], the output like this,

0 0 0 0 1

1 0 0 0 0

1 0 0 0 0

0 0 0 1 0

[Stephen23]

@Yuvaraj V: you are changing your specification. First you wrote a comment where you stated that my example was not possible because 5 is larger than numel(A). Now you have deleted that comment and decided that it is possible. Please clarify which is the correct specification.

[Yuvaraj Venkataswamy]

@Stephen Cobeldick: yes. your answer is working. Thank you.

Also, I have doubt from your question.

If input A=[5,1,1,4], the output like this,

0 0 0 0 1

1 0 0 0 0

1 0 0 0 0

0 0 0 1 0

Help me sir.

[Stephen23]

@Yuvaraj V: I have updated my answer to match your comment.

[Yuvaraj Venkataswamy]

@Stephen Cobeldick: Thank You so much

Answer 1

[Stephen23]

>> A = [3,1,1,4];
>> N = numel(A);
>> Z = zeros(N);
>> Z(sub2ind([N,N],1:N,A)) = 1
Z =
   0   0   1   0
   1   0   0   0
   1   0   0   0
   0   0   0   1

EDIT: if my example is acceptable, as you now write, then you will need something like this:

>> A = [5,1,1,4];
>> R = numel(A);
>> C = max(A);
>> Z = zeros(R,C);
>> Z(sub2ind([R,C],1:R,A)) = 1
Z =
   0   0   0   0   1
   1   0   0   0   0
   1   0   0   0   0
   0   0   0   1   0

[Yuvaraj Venkataswamy]

@Stephen Cobeldick: Thank You so much

Answer 2

[Birdman]

Something like this should work:

A=[3 1 1 4];
Ans=zeros(max(size(A)));
r=1:max(size(A));
c=A;
idx=sub2ind(size(repmat(A,max(size(A)),1)),r,c);
Ans(idx)=1

[Stephen23]

@Birdman: there is a syntax error on this line:

Ans=zeros(max(size(A));

[Birdman]

Yes there should be one more parenthesis. Thanks.