Unique characters: Difference between revisions

</pre>

=={{header|jq}}==

{{works with|jq}}

'''Works with gojq, the Go implementation of jq'''

<lang jq>

# bag of words

def bow(stream):

reduce stream as $word ({}; .[($word|tostring)] += 1);

# Input: an array of strings

# Output: an array of the characters that appear just once

def in_one_just_once:

bow( .[] | explode[] | [.] | implode) | with_entries(select(.value==1)) | keys;

</lang>

'''The task'''

<lang jq>["133252abcdeeffd", "a6789798st", "yxcdfgxcyz"]

| in_one_just_once</lang>

{{out}}

<pre>

["1","5","6","b","g","s","t","z"]