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How can i create this specific matrix??

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연승 김
연승 김 2021-9-9
评论： 연승 김 2021-9-9
Hello. I'm MATLAB beginner.
I want to make A matrix like below.
ex1)
i = 2
j = 3
A = [1,1,0,0,0,0 ; 0,0,1,1,0,0 ; 0,0,0,0,1,1]
ex2)
i = 2
j = 2
A = [1,1,0,0 ; 0,0,1,1]
ex3)
i = 3
j = 4
A = [1,1,1,0,0,0,0,0,0,0,0,0 ; 0,0,0,1,1,1,0,0,0,0,0,0 ; 0,0,0,0,0,0,1,1,1,0,0,0 ; 0,0,0,0,0,0,0,0,0,1,1,1]
Could you MATLAB masters please help me??

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Chunru
Chunru 2021-9-9
Ran in:
i=3;
j=4;
A = kron(eye(j), ones(1,i))
A = 4×12
1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1

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