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Count.java
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// onjava/Count.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Generate incremental values of different types
package onjava;
import java.util.Arrays;
import java.util.function.DoubleSupplier;
import java.util.function.IntSupplier;
import java.util.function.LongSupplier;
import java.util.function.Supplier;
import static onjava.ConvertTo.primitive;
public interface Count {
class Boolean
implements Supplier<java.lang.Boolean> {
private boolean b = true;
@Override
public java.lang.Boolean get() {
b = !b;
return java.lang.Boolean.valueOf(b);
}
public java.lang.Boolean get(int n) {
return get();
}
public java.lang.Boolean[] array(int sz) {
java.lang.Boolean[] result =
new java.lang.Boolean[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pboolean {
private boolean b = true;
public boolean get() {
b = !b;
return b;
}
public boolean get(int n) {
return get();
}
public boolean[] array(int sz) {
return primitive(new Boolean().array(sz));
}
}
class Byte
implements Supplier<java.lang.Byte> {
private byte b;
@Override
public java.lang.Byte get() {
return b++;
}
public java.lang.Byte get(int n) {
return get();
}
public java.lang.Byte[] array(int sz) {
java.lang.Byte[] result =
new java.lang.Byte[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pbyte {
private byte b;
public byte get() {
return b++;
}
public byte get(int n) {
return get();
}
public byte[] array(int sz) {
return primitive(new Byte().array(sz));
}
}
char[] CHARS =
"abcdefghijklmnopqrstuvwxyz".toCharArray();
class Character
implements Supplier<java.lang.Character> {
private int i;
@Override
public java.lang.Character get() {
i = (i + 1) % CHARS.length;
return CHARS[i];
}
public java.lang.Character get(int n) {
return get();
}
public java.lang.Character[] array(int sz) {
java.lang.Character[] result =
new java.lang.Character[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pchar {
private int i;
public char get() {
i = (i + 1) % CHARS.length;
return CHARS[i];
}
public char get(int n) {
return get();
}
public char[] array(int sz) {
return primitive(new Character().array(sz));
}
}
class Short
implements Supplier<java.lang.Short> {
short s;
@Override
public java.lang.Short get() {
return s++;
}
public java.lang.Short get(int n) {
return get();
}
public java.lang.Short[] array(int sz) {
java.lang.Short[] result =
new java.lang.Short[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pshort {
short s;
public short get() {
return s++;
}
public short get(int n) {
return get();
}
public short[] array(int sz) {
return primitive(new Short().array(sz));
}
}
class Integer
implements Supplier<java.lang.Integer> {
int i;
@Override
public java.lang.Integer get() {
return i++;
}
public java.lang.Integer get(int n) {
return get();
}
public java.lang.Integer[] array(int sz) {
java.lang.Integer[] result =
new java.lang.Integer[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pint implements IntSupplier {
int i;
public int get() {
return i++;
}
public int get(int n) {
return get();
}
@Override
public int getAsInt() {
return get();
}
public int[] array(int sz) {
return primitive(new Integer().array(sz));
}
}
class Long
implements Supplier<java.lang.Long> {
private long l;
@Override
public java.lang.Long get() {
return l++;
}
public java.lang.Long get(int n) {
return get();
}
public java.lang.Long[] array(int sz) {
java.lang.Long[] result =
new java.lang.Long[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Plong implements LongSupplier {
private long l;
public long get() {
return l++;
}
public long get(int n) {
return get();
}
@Override
public long getAsLong() {
return get();
}
public long[] array(int sz) {
return primitive(new Long().array(sz));
}
}
class Float
implements Supplier<java.lang.Float> {
private int i;
@Override
public java.lang.Float get() {
return java.lang.Float.valueOf(i++);
}
public java.lang.Float get(int n) {
return get();
}
public java.lang.Float[] array(int sz) {
java.lang.Float[] result =
new java.lang.Float[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pfloat {
private int i;
public float get() {
return i++;
}
public float get(int n) {
return get();
}
public float[] array(int sz) {
return primitive(new Float().array(sz));
}
}
class Double
implements Supplier<java.lang.Double> {
private int i;
@Override
public java.lang.Double get() {
return java.lang.Double.valueOf(i++);
}
public java.lang.Double get(int n) {
return get();
}
public java.lang.Double[] array(int sz) {
java.lang.Double[] result =
new java.lang.Double[sz];
Arrays.setAll(result, n -> get());
return result;
}
}
class Pdouble implements DoubleSupplier {
private int i;
public double get() {
return i++;
}
public double get(int n) {
return get();
}
@Override
public double getAsDouble() {
return get(0);
}
public double[] array(int sz) {
return primitive(new Double().array(sz));
}
}
}