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Given an array of strings words
, return the words that can be typed using letters of the alphabet on only one row of American keyboard like the image below.
In the American keyboard:
- the first row consists of the characters
"qwertyuiop"
,
- the second row consists of the characters
"asdfghjkl"
, and
- the third row consists of the characters
"zxcvbnm"
.
Example 1:
Input: words = ["Hello","Alaska","Dad","Peace"]
Output: ["Alaska","Dad"]
Example 2:
Input: words = ["omk"]
Output: []
Example 3:
Input: words = ["adsdf","sfd"]
Output: ["adsdf","sfd"]
Constraints:
1 <= words.length <= 20
1 <= words[i].length <= 100
words[i]
consists of English letters (both lowercase and uppercase).
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