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Scramble String

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1. You are given two strings s1 and s2.
2. A string can be represented as a binary tree by partitioning it to two non-empty substrings recursively.
3. If you choose any non-leaf node and swap its two children, then the string formed is the scramble of the original string.
4. You have to determine if s2 is a scrambled string of s1.
Input Format 
2 strings s1 and s2
Output Format 
Check the sample output and question video.
Question Video
Constraints 
1 < length of strings <= 100
Sample Input 
great
rgeat
Sample Output 
true


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