[Solved] How to rotate arrays in python?

Question

Array:

[ [ 0 1 2 ]
[ 3 4 5 ] ]

I want this array to be:

[ [ 0 3 ]
[ 1 4 ]
[ 2 5 ] ]

It is possible using for loop but that won't be a true numpy coding.

Answer 1

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 with rotate:
Can one transpose
12
34
To
1
23
4
?

Answer 2

Arrray2= zip(*Array)
but I would propose numpy indeed.

Answer 3

Find the word ANNA in this matrix
AXXX
XNXX
XXNX
XXXA

If you try with a code, you would search rows
Maybe transpose matrix and again search rows.

Now it is up to diagonals.
I would like to transpose the matrix so that again horizontal search is possible.

Answer 4

Valmob101

https://code.sololearn.com/c3cXzpEenmTN/?ref=app

Answer 5

This is the most quick builtin python way to do it
>>>list(zip([
[1,2,3],
[4,5,6],
[7,8,9]])
[[1,4,7],[2,5 8],[3,6,9]]

Answer 6

Everything works. But np.transpose is best and faster i think. Thanks Jay Matthews

Answer 7

Valmob101 array i think yes but surely not a matrix.
I try to find an elegant way for this transition due to a challange that finds words in a matrix.
If this transformation is possible with acceptable effort, the search for words can be kept horizontal and not duagonally.

Answer 8

Oma Falk you can also do vertical slice on 2d numpy arrays like
arr[0] is first row
arr[:,0] is first column
Separate the dimensions with comma, and each dimension can have a fixed index or a slice as you would slice any list.

Answer 9

Oma Falk It worked thanks alot.

https://code.sololearn.com/cgL2V7TjYXU8/?ref=app

Answer 10

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 thanks.it also worked.

Answer 11

Oma Falk you mean kinda this?:

https://code.sololearn.com/cMnwet1XIgL5/?ref=app

Answer 12

Oma Falk another way:

https://code.sololearn.com/cB34VJJIlNFr/?ref=app

Answer 13

https://code.sololearn.com/cSLBAn8q59uv/?ref=app

Answer 14

Oma Falk is it an array?