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Group Anagrams
Group Anagrams is a classic scan-and-record problem: the right bookkeeping beats brute force. Interviewers love it because it reveals your data-structure instincts and your edge-case discipline. Watch your edge cases around repeats, and be clear about what your map is storing.
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Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
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