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Return the words that can be typed using letters from only one row of a US QWERTY keyboard (case-insensitive), i.e., all characters of a word must belong entirely to "qwertyuiop", "asdfghjkl", or "zxcvbnm".
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Apple
Leetcode 500. Keyboard Row
Reported Sep 25, 2026 · 1 source report
SENIOR
Source snapshot: Nov 12, 2026
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