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| >> a = [1 -1 0 0 0 0;0 0 1 -1 0 0;0 0 0 0 1 -1]
a =
1 -1 0 0 0 0
0 0 1 -1 0 0
0 0 0 0 1 -1
>> b = a
b =
1 -1 0 0 0 0
0 0 1 -1 0 0
0 0 0 0 1 -1
>> t = (b==-1); b(circshift(t,1,2)) = -1; b(t) = 0
b =
1 0 -1 0 0 0
0 0 1 0 -1 0
-1 0 0 0 1 0
>> t = (b==-1); b(circshift(t,1,2)) = -1; b(t) = 0
b =
1 0 0 -1 0 0
0 0 1 0 0 -1
0 -1 0 0 1 0
>> t = (b==-1); b(circshift(t,1,2)) = -1; b(t) = 0
b =
1 0 0 0 -1 0
-1 0 1 0 0 0
0 0 -1 0 1 0
>> t = (b==-1); b(circshift(t,1,2)) = -1; b(t) = 0
b =
1 0 0 0 0 -1
0 -1 1 0 0 0
0 0 0 -1 1 0
>> t = (b==-1); b(circshift(t,1,2)) = -1; b(t) = 0
b =
-1 0 0 0 0 0
0 0 -1 0 0 0
0 0 0 0 -1 0 |
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