Matlab:假设1-26分别代表a-z二十六个字母

function str=dec2char(num)
s=num+96;
str=char(s);

祝你学习愉快！

S=[25 15 21 8 1 22 5 20 15 2 5 12 9 5 22 5 9 14 25 15 21 18 19 5 12 6 20 8 1 20 9 19 20 8 5 19 5 3 18 5 20 15 6 19 21 3 3 5 19 19];
S1=S+96;
>> char(S1)

ans =

youhavetobelieveinyourselfthatisthesecretofsuccess

you have to believe in yourself that is the secret of success
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function code=decode(x)
x=x+96;
code=char(x);
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x=[25 15 21 8 1 22 5 20 15 2 5 12 9 5 22 5 9 14 25 15 21 18 19 5 12 6 20 8 1 20 9 19 20 8 5 19 5 3 18 5 20 15 6 19 21 3 3 5 19 19];
decode(x)