第５題
A(1) = A[1,1]
A(2) = A[1,2]
A(3) = A[2,2]
A(4) = A[2,1]
===========
A(5) = A[1,3]
A(6) = A[2,3]
A(7) = A[3,3]
A(8) = A[3,2]
A(9) = A[3,1]
===========
A(10) = A[1,4]
A(11) = A[2,4]
A(12) = A[3,4]
A(13) = A[4,4]
A(14) = A[4,3]
A(15) = A[4,2]
A(16) = A[4,1]
===========
A(17) = A[1,5]
A(18) = A[2,5]
A(19) = A[3,5]
A(20) = A[4,5]
A(21) = A[5,5]
A(22) = A[5,4]
A(23) = A[5,3]
A(24) = A[5,2]
A(25) = A[5,1]
...
...
以此類型，自己找一下數值之間的共通性吧
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