How can I add an index value to an array value?

I have an array of reals, like this.

0.1  0.1  0.1  0.1
0.2  0.2  0.2  0.2
0.1  0.2  0.3  0.4

How can I add the horizontal index value, so that the array ends up like this?

1.1  2.1  3.1  4.1
1.2  2.2  3.2  4.2
1.1  2.2  3.3  4.4

I could easily do it with a loop, but I'm convinced there is a one-line solution. I just can't see it.

PS the array is a lot larger than the example.

Answer 1

[Stephen23]

M = [0.1,0.1,0.1,0.1;0.2,0.2,0.2,0.2;0.1,0.2,0.3,0.4]

M = 3×4

0.1000 0.1000 0.1000 0.1000 0.2000 0.2000 0.2000 0.2000 0.1000 0.2000 0.3000 0.4000

M = M + (1:size(M,2))

M = 3×4

1.1000 2.1000 3.1000 4.1000 1.2000 2.2000 3.2000 4.2000 1.1000 2.2000 3.3000 4.4000

[dormant]

Many thanks. I knew it should be simple.