MATLAB: How to convert the vector to matrix 16 * 16

Question

Can anyone help me

In this function i have vector , i want convert the vector to matrix 16 * 16

function inv_s_box = s_box_inversion (s_box)

for i = 1 : 256

inv_s_box(s_box(i) + 1) = i ;%- 1;

end

Answer 1

Use reshape

inv_s_vox = reshape(1:256,[16,16])
inv_s_vox = 16×16
     1    17    33    49    65    81    97   113   129   145   161   177   193   209   225   241
     2    18    34    50    66    82    98   114   130   146   162   178   194   210   226   242
     3    19    35    51    67    83    99   115   131   147   163   179   195   211   227   243
     4    20    36    52    68    84   100   116   132   148   164   180   196   212   228   244
     5    21    37    53    69    85   101   117   133   149   165   181   197   213   229   245
     6    22    38    54    70    86   102   118   134   150   166   182   198   214   230   246
     7    23    39    55    71    87   103   119   135   151   167   183   199   215   231   247
     8    24    40    56    72    88   104   120   136   152   168   184   200   216   232   248
     9    25    41    57    73    89   105   121   137   153   169   185   201   217   233   249
    10    26    42    58    74    90   106   122   138   154   170   186   202   218   234   250