E10.5 In BIG JAVA

In the Sequence interface of Worked Example 10.1, add static methods that yield Sequence instances:

static Sequence multiplesOf(int n);

static Sequence powersOf(int n);

For example, Sequence.powersOf(2) should return the same sequence as the Square-Sequence class in the worked example.

Sequence.java:

public interface Sequence { int next(); }

SquareSequence.java:

public class SquareSequence implements Sequence { private int n; public int next() { n++; return n * n; } }