Update README.md

pavponn · web-flow · commit 9fcf880e361f · 2018-12-12T22:56:09.000+03:00
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 # Algorithms-and-Data-Structures
 Implementations of different algorithms and data structures.
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+## Content
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+* [Algoritms and data structures for strings](https://github.com/pavponn/Algorithms-and-Data-Structures/tree/master/String)
