Match numbers with letters

I need to find the name score of the names in a text file.

name point: David --> 4 1 22 9 4 = 4+1+22+9+4 = 40

Thanks for your help.

[dpb]

What have you tried?

[Philippe Lebel]

as there are many solutions posted that answer your question, i'd suggest to mark your question as answered.

Answer 1

[Mathieu NOE]

hello

this code does the trick :

ascii_value = uint32(yourstring); % convert your char / string into corresponding ASCII value

% let's converts ASCII values into values ranging from 1 to 26 (use offsets)
% uppercase letters
ind = find(ascii_value<91);
UL = ascii_value(ind) - 64;
% lowercase letters
ind = find(ascii_value>96);
LL = ascii_value(ind) - 96;

value = sum(UL) + sum(LL); % 

[Pax Azx]

thanks but I have to do this for thousands of names in the txt file.

[Mathieu NOE]

ok so let's create a function and loop for all words extracted from a sentence

[Mathieu NOE]

here is it

sentence = 'His story is told in the first book of Samuel and his life as a king in the second book of Samuel and at the beginning of the First book of Kings';

STR = split(sentence);

for ci = 1:numel(STR)
    value(ci) = subfct(char(STR(ci)));
end

function value = subfct(yourstring) 

    ascii_value = uint32(yourstring); % convert your char / string into corresponding ASCII value

    % let's converts ASCII values into values ranging from 1 to 26 (use offsets)
    % uppercase letters
    ind = find(ascii_value<91);
    UL = ascii_value(ind) - 64;
    % lowercase letters
    ind = find(ascii_value>96);
    LL = ascii_value(ind) - 96;

    value = sum(UL) + sum(LL); % 
end

[Pax Azx]

I wrote to you. Thank you if you help.

Answer 2

[Jan]

Name  = 'David';
Num   = lower(Name) - 'a' + 1;  % 'a' -> 1, 'b' -> 2, ...
Score = sum(Num);

[EDITED] You mention in comments, that you want to do this for "names in a text file". Do the files contain one name per line?

Str = fileread('YourTextFile.txt');
Str(Str == char(13)) = [];
CStr = strsplit(Str, char(10));

Score = zeros(size(CStr));
for k = 1:numel(CStr)
    Score(k) = sum(lower(CStr{k}) - 'a' + 1);
end

[Mathieu NOE]

I cannot fight against Jan, he's really too good ...

Score = sum(Num(Num>0));  % just avoid taking blanks into account

[Pax Azx]

There is one name on each line and there are 18239 names in total.

[Jan]

@Mathieu NOE: I'm very happy that we are fighting together to get the best solution for the question. Seeing different approachs is useful to understand the power of MATLAB.

[Mathieu NOE]

@Jan : tx for your nice comments , but I'm not yet to your level - still I like to see how tricky problems can be solved elegantly by knowledgable people like you and others contributors here.

Answer 3

[Philippe Lebel]

im late to the show, but here we go anyway...

clear
clc
name = 'david';
a = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
total = 0;
for i=1:length(name)
    arr = cellfun(@(x)isequal(x,name(i)),a);
    [row,col] = find(arr);
    total = total + col
end