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290. Word Pattern

Easy


Given a pattern and a string s, find if s follows the same pattern.

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Here follow means a full match, such that there is a bijection between a letter in pattern and a non-empty word in s.

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Example 1:

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Input: pattern = "abba", s = "dog cat cat dog"
+Output: true
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Example 2:

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Input: pattern = "abba", s = "dog cat cat fish"
+Output: false
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Example 3:

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Input: pattern = "aaaa", s = "dog cat cat dog"
+Output: false
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Constraints:

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