modified:   app/src/main/java/com/example/xiangyi/sudoku1/GameFragment.java
	modified:   app/src/main/java/com/example/xiangyi/sudoku1/KeypadView.java
	modified:   app/src/main/java/com/example/xiangyi/sudoku1/Main_Activity.java
	modified:   app/src/main/java/com/example/xiangyi/sudoku1/PuzzleView.java
	modified:   app/src/main/java/com/example/xiangyi/sudoku1/Sudoku.java
	modified:   app/src/main/res/drawable-hdpi/Thumbs.db
	modified:   app/src/main/res/drawable-mdpi/Thumbs.db
	modified:   app/src/main/res/drawable-mdpi/about1.jpg
	modified:   app/src/main/res/drawable-mdpi/back1.jpg
	modified:   app/src/main/res/drawable-mdpi/back2.jpg
	modified:   app/src/main/res/drawable-mdpi/back3.jpg
	modified:   app/src/main/res/drawable-mdpi/back4.jpg
	modified:   app/src/main/res/drawable-xhdpi/Thumbs.db
	modified:   app/src/main/res/drawable-xxhdpi/Thumbs.db
	new file:   app/src/main/res/drawable/drawable_button.xml
	modified:   app/src/main/res/layout/about.xml
	modified:   app/src/main/res/layout/game.xml
	new file:   app/src/main/res/layout/rank.xml
	modified:   app/src/main/res/layout/welcome.xml
	modified:   app/src/main/res/values/colors.xml
	modified:   app/src/main/res/values/strings.xml

	deleted:    app/src/main/java/com/example/xiangyi/sudoku1/About.java
	deleted:    app/src/main/java/com/example/xiangyi/sudoku1/Game.java
	deleted:    app/src/main/java/com/example/xiangyi/sudoku1/GameOver.java
	deleted:    app/src/main/java/com/example/xiangyi/sudoku1/SudokuSolver.java
	deleted:    app/src/main/java/com/example/xiangyi/sudoku1/TimeThread.java