(copy of Prob. 4)
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1.
Example:
Input n = 5
Output a is [1 0 1 0 1
0 1 0 1 0
1 0 1 0 1
0 1 0 1 0
1 0 1 0 1]
Avoid using for/while loops.
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