Homework 2#9

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Dmitrysim wants to merge 4 commits intoAndroid-Developer-Basic:masterfrom

Dmitrysim:master

Commits on May 2, 2023

add Singleton pattern
Dmitrysim
committed

Commits on May 10, 2023

add Decorator pattern
Dmitrysim
committed

Commits on May 11, 2023