How to Solve Word Pattern Problem
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Word Pattern
Given a pattern and a string s, find if s follows the same pattern. Here follow means a full match, such that there is a bijection between a letter in pattern and a non-empty word in s. Specifically: ...
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Understanding the Word Pattern Problem
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Problem Statement
Given a pattern and a string s, find if s follows the same pattern. Here follow means a full match, such that there is a bijection between a letter in pattern and a non-empty word in s. Specifically: Each letter in pattern maps to exactly one unique word in s. Each unique word in s maps to exactly one letter in pattern. No two letters map to the same word, and no two words map to the same letter.
Word Pattern
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Examples
pattern = "abba", s = "dog cat cat dog"trueThe bijection can be established as: 'a' maps to "dog". 'b' maps to "cat".
pattern = "abba", s = "dog cat cat fish"falsepattern = "aaaa", s = "dog cat cat dog"falseConstraints
1 <= pattern.length <= 300pattern contains only lower-case English letters.1 <= s.length <= 3000s contains only lowercase English letters and spaces ' '.s does not contain any leading or trailing spaces.All the words in s are separated by a single space.How Interview Coder Helps with Leetcode Problems
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