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Solution 139840

Submitted on 17 Sep 2012 by Dan

Correct

21Size
Leading solution size is 11.
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test
Code Input and Output
1
Pass
 
%%
n = 1;
m_correct = [1 1];
assert(isequal(mirror_matrix(n),m_correct))
ans =
     1     1
2
Pass
 
%%
n = 3;
m_correct = [1 2 3 3 2 1; 1 2 3 3 2 1; 1 2 3 3 2 1];
assert(isequal(mirror_matrix(n),m_correct))
ans =
     1     2     3     3     2     1
     1     2     3     3     2     1
     1     2     3     3     2     1
3
Pass
 
%%
n = 33;
m_correct = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1;];
assert(isequal(mirror_matrix(n),m_correct))
ans =
  Columns 1 through 10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
     1     2     3     4     5     6     7     8     9    10
  Columns 11 through 20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
    11    12    13    14    15    16    17    18    19    20
  Columns 21 through 30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
    21    22    23    24    25    26    27    28    29    30
  Columns 31 through 40
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
    31    32    33    33    32    31    30    29    28    27
  Columns 41 through 50
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
    26    25    24    23    22    21    20    19    18    17
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