rotl90(A)

Rotate matrix A left 90 degrees.

Examples

Rotate a matrix left 90 degrees:

julia> A = [1 2 3; 4 5 6; 7 8 9];
julia> rotl90(A)
3×3 Array{Int64,2}:
3  6  9
2  5  8
1  4  7

This example rotates the matrix A left 90 degrees.

Rotate a matrix left 90 degrees multiple times:
```
julia> B = [11 12; 21 22];
julia> rotl90(B, 2)
2×2 Array{Int64,2}:
22  21
12  11
```
It rotates the matrix B left 90 degrees twice.
Handle zero rotations (equivalent to copy):
```
julia> C = [1 2 3; 4 5 6; 7 8 9];
julia> rotl90(C, 0)
3×3 Array{Int64,2}:
1  2  3
4  5  6
7  8  9
```
When k is zero, the function returns a copy of the original matrix.

Common mistake example:

julia> D = [4 5; 6 7];
julia> rotl90(D, 5)
ERROR: DomainError: The rotation count must be a non-negative integer less than 4.

In this example, the rotation count k is greater than or equal to 4, which is not allowed. The valid range for k is 0 to 3. Make sure to provide a valid rotation count within this range to avoid errors.

Ac_ldiv_B, Ac_ldiv_Bc, Ac_mul_B, Ac_mul_Bc, Ac_rdiv_B, Ac_rdiv_Bc, At_ldiv_B, At_ldiv_Bt, At_mul_B, At_mul_Bt, At_rdiv_B, At_rdiv_Bt, A_ldiv_Bc, A_ldiv_Bt, A_mul_B!, A_mul_Bc, A_mul_Bt, A_rdiv_Bc, A_rdiv_Bt, Bidiagonal, cond, conv2, det, diag, diagind, diagm, diff, eig, eigvals, eigvecs, expm, eye, full, inv, isdiag, ishermitian, isposdef, isposdef!, issym, istril, istriu, logabsdet, logdet, lyap, norm, qrfact, rank, repmat, rot180, rotl90, rotr90, sortrows, sqrtm, SymTridiagonal, trace, Tridiagonal, tril, tril!, triu, triu!, writedlm,

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rotl90(A)

Examples

See Also

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