1153. String Transforms Into Another String

[ErdemT09]

https://leetcode.com/problems/string-transforms-into-another-string/

Resolves: #239

Algorithm:

A string is not convertible to another string under these 2 conditions:

1. A character transforms into more than one character:
   "aaa" -> "hgf" is not possible.
2. The second string contains all possible letters:
   When both strings contain same letters as in: "abc" -> "bca", we can convert individual letters without making them same by temporarily converting them to another letters like this:
   "abc" -> "dbc" -> "dba" -> "dca" -> "bca"
   As long as we have a letter not present in the destination string, we can do such temporary conversions.

We only have to check for these.

[altay9]

Nice code and it is good to see that our names can be converted:

Thank you Erdem.