edited body

Source Link

edited Sep 17, 2017 at 16:05

105.3k
9
135
372

Matlab, 33 42 33 bytes

Using an anonymous function:

@(A)round(inv(A+eps)'*det(A+eps))

Input and output are matrices (2D numeric arrays).

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)'*det(A+eps))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
-8    -5     4
18    12    -6
-4    -1     2

Example with singular matrix:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)*det(A+eps)')
>> ans([1,0 ; 0,0])
ans =
     0     0
     0     1

Or try it online in Octave.

Matlab, 33 42 bytes

Using an anonymous function:

@(A)round(inv(A+eps)'*det(A+eps))

Input and output are matrices (2D numeric arrays).

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)'*det(A+eps))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
-8    -5     4
18    12    -6
-4    -1     2

Example with singular matrix:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)*det(A+eps)')
>> ans([1,0 ; 0,0])
ans =
     0     0
     0     1

Or try it online in Octave.

Matlab, 42 33 bytes

Using an anonymous function:

@(A)round(inv(A+eps)'*det(A+eps))

Input and output are matrices (2D numeric arrays).

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)'*det(A+eps))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
-8    -5     4
18    12    -6
-4    -1     2

Example with singular matrix:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)*det(A+eps)')
>> ans([1,0 ; 0,0])
ans =
     0     0
     0     1

Or try it online in Octave.

As per the OP's clarifications, `mat2str` is not needed

Source Link

edited Dec 21, 2015 at 0:31

Luis Mendo

105.3k
9
135
372

Matlab, 4233 42 bytes

Using an anonymous function:

@(A)mat2str(round(inv(A+eps)'*det(A+eps)))

Input is in standard Matlab format, that is, [-3,2,-5; -1,0,-2; 3,-4,1], where commas can be replaced by spaces, and spaces afteroutput are matrices ; can be removed(2D numeric arrays).

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
[-8    -5 4;18    4
18    12    -6;6
-4    -1 2]    2

Example with singular matrix:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)*det(A+eps)'))
>> ans([1,0 ; 0,0])
ans =
[0 0;0 1]   0     0
     0     1

Or try it online try it online in Octave.

Matlab, 42 bytes

Using an anonymous function:

@(A)mat2str(round(inv(A+eps)'*det(A+eps)))

Input is in standard Matlab format, that is, [-3,2,-5; -1,0,-2; 3,-4,1], where commas can be replaced by spaces, and spaces after ; can be removed.

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
[-8 -5 4;18 12 -6;-4 -1 2]

Example with singular matrix:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)*det(A+eps)'))
>> ans([1,0 ; 0,0])
ans =
[0 0;0 1]

Or try it online in Octave.

Matlab, 33 42 bytes

Using an anonymous function:

@(A)round(inv(A+eps)'*det(A+eps))

Input and output are matrices (2D numeric arrays).

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)'*det(A+eps))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
-8    -5     4
18    12    -6
-4    -1     2

Example with singular matrix:

>> @(A)round(inv(A+eps)'*det(A+eps))
ans = 
    @(A)round(inv(A+eps)*det(A+eps)')
>> ans([1,0 ; 0,0])
ans =
     0     0
     0     1

Or try it online in Octave.

edited body

Source Link

edited Dec 17, 2015 at 0:02

Luis Mendo

105.3k
9
135
372

Matlab, 42 bytes

Using an anonymous function:

@(A)mat2str(round(inv(A+eps)'*det(A+eps)))

Input is in standard Matlab format, that is, [-3,2,-5; -1,0,-2; 3,-4,1], where commas can be replaced by spaces, and spaces after ; can be removed.

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
[-8 -5 4;18 12 -6;-4 -1 2]

Example with singular matrix:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)*det(A+eps)'))
>> ans([1,0 ; 0,0])
ans =
[0 0;0 1]

Or try it online try it online in Octave.

Matlab, 42 bytes

Using an anonymous function:

@(A)mat2str(round(inv(A+eps)'*det(A+eps)))

Input is in standard Matlab format, that is, [-3,2,-5; -1,0,-2; 3,-4,1], where commas can be replaced by spaces, and spaces after ; can be removed.

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
[-8 -5 4;18 12 -6;-4 -1 2]

Example with singular matrix:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)*det(A+eps)'))
>> ans([1,0 ; 0,0])
ans =
[0 0;0 1]

Or try it online in Octave.

Matlab, 42 bytes

Using an anonymous function:

@(A)mat2str(round(inv(A+eps)'*det(A+eps)))

Input is in standard Matlab format, that is, [-3,2,-5; -1,0,-2; 3,-4,1], where commas can be replaced by spaces, and spaces after ; can be removed.

eps is added in case the matrix is singular. It is "removed" using round (the true result is guaranteed to be an integer).

Example:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
>> ans([-3,2,-5; -1,0,-2; 3,-4,1])
ans =
[-8 -5 4;18 12 -6;-4 -1 2]

Example with singular matrix:

>> @(A)mat2str(round(inv(A+eps)'*det(A+eps)))
ans = 
    @(A)mat2str(round(inv(A+eps)*det(A+eps)'))
>> ans([1,0 ; 0,0])
ans =
[0 0;0 1]

Or try it online in Octave.

edited body

Source Link

edited Dec 16, 2015 at 23:54

Luis Mendo

105.3k
9
135
372

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added 370 characters in body

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edited Dec 16, 2015 at 15:44

Luis Mendo

105.3k
9
135
372

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Source Link

created Dec 16, 2015 at 14:52

Luis Mendo

105.3k
9
135
372

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Matlab, 33 42 33 bytes

Matlab, 33 42 bytes

Matlab, 42 33 bytes

Matlab, 4233 42 bytes

Matlab, 42 bytes

Matlab, 33 42 bytes

Matlab, 42 bytes

Matlab, 42 bytes

Matlab, 42 bytes