convert alphabet to coresponding number by using ASCII

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Maria
Maria 2020-5-25
回答： Walter Roberson 2020-5-25
I have question, how to convert alphabet in lowercase to coresponding number by using ASCII. Such as a=1,b=2,c=3...

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-5-25
Like this
char2num = @(c) char(c)-96;
Example
>> char2num('a')
ans =
1
>> char2num('b')
ans =
2
>> char2num('z')
ans =
26

更多回答（1 个）

Walter Roberson
Walter Roberson 2020-5-25
UpperToLower = @(c) char(c-'A'+'a')
Or if you are daring,
UpperToLower = @(c) char(c+32);

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