Chapter 5 Exercise 18, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY. Use nested loops that display the following patterns in four separate programs:

Pattern A

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

1 2 3 4 5 6

Pattern B

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4

1 2 3

1 2

1

Pattern C

1

2 1

3 2 1

4 3 2 1

5 4 3 2 1

6 5 4 3 2 1

Pattern D

1 2 3 4 5 6

1 2 3 4 5

1 2 3 4

1 2 3

1 2

1