How to select the first letter of every word

I have no idea how I would go about doing this

Input: I like eating pizza Output: Ilep

Answer 1

[Mohammad Abouali]

str='I like eating pizza'; 
str2=cellfun(@(c) c(1),strsplit(str))

[Krish Desai]

Any ways to do this with loops? Just another way of doing it...I tried running this but it failed multiple hidden tests.

[Walter Roberson]

You will need to define "word". What is the first letter of the word "23skidoo" ? What is the first letter of each word in the question "What is the first letter of each word in the question "What is the first letter of each word in the question?"" ? What is the first letter of each word of "3 o'clock AM" ?

[Mohammad Abouali]

I am not sure what is "multiple hidden tests". But here is the loop form of the code:

str='I like eating pizza'; 
splittedStr=strsplit(str);
str2='';
for idx=1:numel(splittedStr)
    str2(end+1)=splittedStr{idx}(1);
end

[Krish Desai]

Walter, In 23skidoo, the first letter would be the s. In "3 o'clock AM" the output should be oA.

[Krish Desai]

Also how would I be able to eliminate extra spaces? For instance if the input was ' I like eating pizza'?

[Krish Desai]

Function strtrim to fix this problem.