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cse160-staff@cs.washington.edu cse160_20wi_checkin03 > array123
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Given an array of ints, return True if the sequence of numbers 1, 2, 3 appears in the array somewhere.


array123([1, 1, 2, 3, 1]) → True
array123([1, 1, 2, 4, 1]) → False
array123([1, 1, 2, 1, 2, 3]) → True

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def array123(nums):

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Difficulty: 224.0

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