464. Uncommon Words From Two Sentences
EasyHash Map
A word is uncommon if it appears exactly once across both sentences combined. Print the uncommon words in alphabetical order, or NONE.
Input format
Line 1: sentence 1 Line 2: sentence 2
Output format
The words or NONE.
Example 1
Input
this apple is sweet this apple is sour
Output
sour sweet
Example 2
Input
apple apple banana
Output
banana
Constraints
Words are lowercase, separated by single spaces.
Read input from standard input and print the answer to standard output. Your code is judged against 3 test cases, most of them hidden.
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