Swapping Blocks in a Matrix
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Hello. I'm trying to swap the first two numbers of the first and second rows of this test matrix with the last two numbers of the second and third rows. Is there any way to swap these numbers in a matrix that's not one row and/or not on the same row?
x = [1 2 3 4 5;
6 7 8 9 10;
11 12 13 14 15]
The result should be:
x = [9 10 3 4 5;
14 15 8 1 2;
11 12 13 6 7]
采纳的回答
>> x = [1,2,3,4,5;6,7,8,9,10;11,12,13,14,15]
x =
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
>> x([1,4,11,14]) = x([11,14,1,4])
x =
9 10 3 4 5
6 7 8 1 2
11 12 13 14 15
You can easily generate those linear indices with sub2ind.
更多回答（1 个）
Bruno Luong
2018-9-12
编辑：Bruno Luong
2018-9-12
[x(1:2,1:2) x(2:3,4:5)] = deal(x(2:3,4:5),x(1:2,1:2))
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