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You are given two strings, pattern and value. The pattern string consists of just the letters a and b, describing a pattern within a string. For example, the string catcatgocatgo matches the pattern aabab (where cat is a and go is b). It also matches patterns like a, ab, and b. Write a method to determine if value matches pattern. a and b cannot be the same string.
Example 1:
Input: pattern = "abba", value = "dogcatcatdog" Output: true
Example 2:
Input: pattern = "abba", value = "dogcatcatfish" Output: false
Example 3:
Input: pattern = "aaaa", value = "dogcatcatdog" Output: false
Example 4:
Input: pattern = "abba", value = "dogdogdogdog" Output: true Explanation: "a"="dogdog",b="",vice versa.
Note:
0 <= len(pattern) <= 1000
0 <= len(value) <= 1000
pattern
only contains "a"
and "b"
, value
only contains lowercase letters.
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