#1469 Add lambda expressions implementation for Strategy Pattern (#1631)
* #1469 Add Strategy Pattern lambda implementation
After Java 8.
Also take advantage of enum
* #1469 Update class diagrams
* #1469 Update README.md
Add lambda programmatic example
* #1469 Remove unused imports
Co-authored-by: NSubhrodip Mohanta <subhrodipmohanta@gmail.com>
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![strategy/etc/strategy_urm.png](https://gitcode.net/weixin_45611297/java-design-patterns/-/raw/25ed2540f4b5d6fc2709c1e178082461a1da222d/strategy/etc/strategy_urm.png)