Binary string to character conversion

2012 3 20
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回答已采纳
更新时间：2014 8 14
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Hello, If I have a string, S = 001000110111 Given:
a = 0
b = 10
c = 110
d = 111
I need to convert the string using that key.
So converted_S = aabaacd
How can I do this? Thanks.

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Grzegorz Knor
Grzegorz Knor 2012-3-20

0 个投票

S = '001000110111';
a = '0';
b = '10';
c = '110';
d = '111';
S = strrep(S,d,'d');
S = strrep(S,c,'c');
S = strrep(S,b,'b');
S = strrep(S,a,'a')

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Brandon
Brandon 2012-3-20
Nice solution, but this doesn't quite work without error. My actual string is 256,000 characters, with this I get a string with length 258,446. Seems like strrep doesn't go in order.
Brandon
Brandon 2012-3-20
Example:
X = 'aabdcaaabcdcdba';
W = '001011111000010110111110111100';
This code produces:
W = 'aabdddaaaabcdddaddaa'
Brandon
Brandon 2012-3-20
Figured it out! Use regexprep instead of strrep. Thanks for leading me in the right direction, much better than the for loop I was trying to use.
Grzegorz Knor
Grzegorz Knor 2012-3-20
regexp works correctly in this case :) strrep first looks for patterns, and then replace it.
Abirami
Abirami 2014-8-14
hello, i need to do the same thing for a 256x256 matrix...pls help...

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