Given a pattern and a string str, find if str 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 substring in str.
Example 1:
Input: pattern ="abab", str ="redblueredblue"Output: true
Example 2:
Input: pattern = pattern ="aaaa", str ="asdasdasdasd"Output: true
Example 3:
Input: pattern ="aabb", str ="xyzabcxzyabc"Output: false
Notes:
You may assume both pattern and str contains only lowercase
letters.