Given a pattern
and a string str
, find if str
follows the same pattern.
Examples:
pattern = "abba
", str = "dog cat cat dog
" should return true.
pattern = "abba
", str = "dog cat cat fish
" should return false.
pattern = "aaaa
", str = "dog cat cat dog
" should return false.
pattern = "abba
", str = "dog dog dog dog
" should return false.
Notes:
Both pattern and str contains only lowercase alphabetical letters.
Both pattern and str do not have leading or trailing spaces.
Each word in str is separated by a single space.
Each letter in pattern must map to a word with length that is at least 1.
Read full article from [LeetCode]Word Pattern | 书影博客
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