Added number generators

src/main/java/com/mattrixwv/ArrayAlgorithms.java

@@ -19,7 +19,7 @@
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv;
 
 
 import java.math.BigInteger;

src/main/java/com/mattrixwv/NumberAlgorithms.java

@@ -19,7 +19,7 @@
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv;
 
 
 import java.math.BigInteger;
@@ -29,7 +29,7 @@ import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 
-import mattrixwv.exceptions.InvalidResult;
+import com.mattrixwv.exceptions.InvalidResult;
 
 
 public class NumberAlgorithms{

src/main/java/com/mattrixwv/Stopwatch.java

@@ -19,10 +19,10 @@ Copyright (C) 2022  Matthew Ellison
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv;
 
 
-import mattrixwv.exceptions.InvalidResult;
+import com.mattrixwv.exceptions.InvalidResult;
 
 
 public class Stopwatch{

src/main/java/com/mattrixwv/StringAlgorithms.java

@@ -19,7 +19,7 @@
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv;
 
 
 import java.util.ArrayList;

src/main/java/com/mattrixwv/Triple.java

@@ -0,0 +1,67 @@
+//JavaClasses/src/main/java/com/mattrixwv/Triple.java
+//Mattrixwv
+// Created: 08-20-22
+//Modified: 08-20-22
+//This class implements a triplet of variables
+/*
+Copyright (C) 2022  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+package com.mattrixwv;
+
+
+public class Triple<T, U, V>{
+	private T a;
+	private U b;
+	private V c;
+
+	public Triple(T a, U b, V c){
+		this.a = a;
+		this.b = b;
+		this.c = c;
+	}
+
+	public T getA(){
+		return a;
+	}
+	public U getB(){
+		return b;
+	}
+	public V getC(){
+		return c;
+	}
+
+	@Override
+	public boolean equals(Object o){
+		if(this == o){
+			return true;
+		}
+		else if(o instanceof Triple<?, ?, ?>){
+			Triple<?, ?, ?> rightSide = (Triple<?, ?, ?>)o;
+			return (a.equals(rightSide.a) && b.equals(rightSide.b) && c.equals(rightSide.c));
+		}
+		else{
+			return false;
+		}
+	}
+	@Override
+	public int hashCode(){
+		return a.hashCode() + b.hashCode() * c.hashCode();
+	}
+	@Override
+	public String toString(){
+		return "[" + a.toString() + ", " + b.toString() + ", " + c.toString() + "]";
+	}
+}

src/main/java/com/mattrixwv/exceptions/InvalidResult.java

@@ -3,7 +3,7 @@
 // Created: 08-24-20
 //Modified: 08-24-20
 //This is an exception for an invalid result out of one of my algorithms
-package mattrixwv.exceptions;
+package com.mattrixwv.exceptions;
 
 
 public class InvalidResult extends Exception{

src/main/java/com/mattrixwv/generators/HexagonalNumberGenerator.java

@@ -0,0 +1,57 @@
+//JavaClasses/src/main/java/mattrixwv/HexagonalNumberGenerator.java
+//Matthew Ellison
+// Created: 08-20-22
+//Modified: 08-20-22
+//This class generates hexagonal numbers
+/*
+Copyright (C) 2022  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+package com.mattrixwv.generators;
+
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+public class HexagonalNumberGenerator implements Iterator<Long>{
+	private Long num;
+
+	public HexagonalNumberGenerator(){
+		num = 1L;
+	}
+
+	@Override
+	public boolean hasNext(){
+		return (2 * num * num) > 0;
+	}
+
+	@Override
+	public Long next(){
+		Long newNum = ((2 * num * num) - num);
+		++num;
+		if(num > 0){
+			return newNum;
+		}
+		else{
+			throw new NoSuchElementException("Number overflow");
+		}
+	}
+
+	public static boolean isHexagonal(Long x){
+		Long n = Math.round((Math.sqrt(1 + (8 * x)) + 1) / 4);
+		return ((2 * n * n) - n) == x;
+	}
+}

src/main/java/com/mattrixwv/generators/PentagonalNumberGenerator.java

@@ -0,0 +1,57 @@
+//JavaClasses/src/main/java/com/mattrixwv/generators/PentagonalNumberGenerator.java
+//Mattrixwv
+// Created: 08-20-22
+//Modified: 08-20-22
+//This class generates pentagonal numbers
+/*
+Copyright (C) 2022  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+package com.mattrixwv.generators;
+
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+public class PentagonalNumberGenerator implements Iterator<Long>{
+	private Long num;
+
+	public PentagonalNumberGenerator(){
+		num = 1L;
+	}
+
+	@Override
+	public boolean hasNext(){
+		return (3 * num * num) > 0;
+	}
+
+	@Override
+	public Long next(){
+		long newNum = ((3 * num * num) - num) / 2;
+		++num;
+		if(num > 0){
+			return newNum;
+		}
+		else{
+			throw new NoSuchElementException("Number overflow");
+		}
+	}
+
+	public static boolean isPentagonal(Long x){
+		Long n = Math.round((Math.sqrt(1 + (24 * x)) + 1) / 6);
+		return (((3 * n * n) - n) / 2) == x;
+	}
+}

src/main/java/com/mattrixwv/generators/SieveOfEratosthenes.java

@@ -19,7 +19,7 @@ Copyright (C) 2022  Matthew Ellison
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv.generators;
 
 
 import java.util.ArrayList;

src/main/java/com/mattrixwv/generators/SieveOfEratosthenesBig.java

@@ -19,7 +19,7 @@ Copyright (C) 2022  Matthew Ellison
 	You should have received a copy of the GNU Lesser General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
-package mattrixwv;
+package com.mattrixwv.generators;
 
 
 import java.math.BigInteger;

src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java

@@ -0,0 +1,57 @@
+//JavaClasses/src/main/java/com/mattrixwv/generators/TriangularNumberGenerator.java
+//Mattrixwv
+// Created: 08-20-22
+//Modified: 08-20-22
+//This class generates triangular numbers
+/*
+Copyright (C) 2022  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+package com.mattrixwv.generators;
+
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+public class TriangularNumberGenerator implements Iterator<Long>{
+	private Long num;
+
+	public TriangularNumberGenerator(){
+		num = 1L;
+	}
+
+	@Override
+	public boolean hasNext(){
+		return (num * num) > 0;
+	}
+
+	@Override
+	public Long next(){
+		Long newNum = ((num * num) + num) / 2;
+		++num;
+		if(num > 0){
+			return newNum;
+		}
+		else{
+			throw new NoSuchElementException("Number overflow");
+		}
+	}
+
+	public static boolean isTriangular(Long x){
+		Long n = Math.round((Math.sqrt(1 + (8 * x)) - 1) / 2);
+		return (((n * n) + n) / 2) == x;
+	}
+}