How to separate first 8 digits in binary format and convert them to the hex?

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I need a code to ask me to enter a number in binary format, and then separate them byte by byte (each 8 digits) then displace low and high value bytes and convert them to the hex.
for example if the input is 1000000011000000 then the output would be c080

Akzeptierte Antwort

dpb
dpb am 7 Jul. 2013
Bearbeitet: dpb am 7 Jul. 2013
Enter the value as a string and then convert. First below does the endian swap directly; if want to do this way write a little helper function that does it.
Alternatively, use the builtin swapbytes function on the internal representation.
MATL
>> b='1000000011000000'
b =
1000000011000000
>> dec2hex(bin2dec([b(9:16) b(1:8)]))
ans =
C080
>> dec2hex(swapbytes(uint16(bin2dec(b))))
ans =
C080
>>

Weitere Antworten (2)

Image Analyst
Image Analyst am 7 Jul. 2013
Bearbeitet: Image Analyst am 7 Jul. 2013
Try this:
binaryString = '1000000011000000'
decimalNumber = bin2dec(binaryString)
hexString = dec2hex(decimalNumber)
Adapt as necessary. To get substrings
ss = s(1:8) % Get first 8 digits.
To reverse digits:
sr = s(end: -1 : 1)

Jan
Jan am 7 Jul. 2013
Bearbeitet: Jan am 7 Jul. 2013
bin2dec and dec2hex have a certain overhead, which can be avoided:
str = '1000000011000000';
bin = reshape(str - '0', 8, [])';
d = bin * pow2(:-1:0)';
d = d([2,1]); % Swap bytes
h = sprintf('%x', d);

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