2013-5: Identity Crisis
An identity matrix is a square matrix (table) of 0 with 1's in the main diagonal.
Write an APL dfn which produces an n×n identity matrix.
Examples:
(your_function) 5
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
(your_function) 1 ⍝ should return a 1×1 matrix
1
(your_function) 0 ⍝ should return a 0×0 matrix
your_function ←
Solutions
