what is difference between 124567891234567 vector and [1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7] vector? how to convert 1234567891234567 vector into [1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7]?

matrix formed by 123456789 look like this

1234;
5678;
9123;
4567;

while matrix formed by

 [1 2 3 4 5 6 7 8  9 1 2  3  4 5 6  7]

look like

1 2 3 4;
5 6 7 8;
9 1 2 3;
4 5 6 7;

in first case bitwisexor and xor results are not true

[per isakson]

1234567891234567

looks like a string array and

[1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7]

looks like a numerical vector. Is that what you mean?

Answer 1

[Walter Roberson]

The first one looks to me as if it would have been entered as '1234567891234567'. it looks to me as if the operation is

output = reshape(M, 4, 4).'

We do not know how the bitwise tests were coded.

'1234567891234567' is exactly the same in MATLAB as

 ['1' '2' '3' '4' '5' '6' '7' '8' '9' '1' '2' '3' '4' '5' '6' '7']

MATLAB uses 16 bit Unicode code points internally to represent characters. '1' is a character; its printed representation in any given font is a glyph https://glyphsapp.com/tutorials/unicode. What you see is the glyph, the picture representing the character; after parsing, '1' is the character, which is something that has particular meaning attached to it. The internal representation of the character associated with '1' is not the integer 1: it is the integer 49. ['1' '2' '3' '4' '5' '6' '7' '8' '9' '1' '2' '3' '4' '5' '6' '7'] in MATLAB is uint16([49 50 51 52 53 54 55 56 57 49 50 51 52 53 54 55]) but marked to be interpreted as character.

If you look at the history of mechanical alphabets such as https://en.wikipedia.org/wiki/Baudot_code you will see that historically the codes never used integer 0 for character '0', integer 1 for character '1' and so on. The codes were designed around matters such as operator fatigue and mechanical wear.