Is there a way to loop a char into an array?

Question

To elaborate, what I mean is, if I wish to create an array of the alphabet:
(i.e. char[] alphabet = new char[26];)
is it possible to use a for loop, for instance, to iterate over chars as opposed to me initializing each letter individually in brackets?
(i.e. char[] alphabet = {'a','b','c',...'z'};)

Elliott Frisch · Accepted Answer · 2020-03-19 23:29:25Z

1

Yes. Just add a value to a char in a loop. Like,

for (int i = 0; i < alphabet.length; i++) {
    alphabet[i] = (char) ('a' + i);
}

Alternatively, String.toCharArray() like

char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();

answered Mar 19, 2020 at 23:29

Elliott Frisch

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4 Comments

eg3 Over a year ago

I understand the second piece of code where the toCharArray method created a new character array from the string, but I do not understand why you casted char--or that's how I am interpreting it. Can you explain to me what is going on there or provide a resource that will help me better understand what is happening? Thanks.

Elliott Frisch Over a year ago

@eg3 char is an integral type in Java. char + int is an int. You want the char. In other words, 'a' + 1 is 'b' (as an int).

armani Over a year ago

@ElliottFrisch - I fixed my code and even upvoted your code. Could you please remove my downvote?

chrylis -cautiouslyoptimistic- Over a year ago

Or for (char c = 'a'; c <= 'z'; c++).

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