Draw a x-by-x matrix 'E' using 1 and 0. (x is odd and bigger than 4)

Example:

x=5
ans=
[1 1 1 1 1
 1 0 0 0 0
 1 1 1 1 1
 1 0 0 0 0
 1 1 1 1 1]

x=7
ans=
[1 1 1 1 1 1 1
 1 0 0 0 0 0 0
 1 0 0 0 0 0 0
 1 1 1 1 1 1 1 
 1 0 0 0 0 0 0
 1 0 0 0 0 0 0
 1 1 1 1 1 1 1]
Solve

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Last Solution submitted on Feb 08, 2026

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Truong Minh 贵林 三生三世 灰

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