move IntegerPartitionGeneratorRunner to test scope

Author: TilmanNeumann

src/main/java/de/tilman_neumann/jml/partitions/IntegerPartitionGenerator.java

@@ -13,9 +13,6 @@
  */
 package de.tilman_neumann.jml.partitions;
 
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStreamReader;
 import java.util.ArrayDeque;
 import java.util.Collections;
 import java.util.SortedSet;
@@ -24,8 +21,6 @@
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
 
-import de.tilman_neumann.util.ConfigUtil;
-
 /**
  * Integer partition generator, derived from fast multipartite number partition generator.
  * @author Tilman Neumann
@@ -112,6 +107,10 @@ public int[] next() {
 		return result;
 	}
 
+	public int getMaxStackSize() {
+		return maxStackSize;
+	}
+	
 	/**
 	 * Computes the partitions of the given number.
 	 * This is much slower than iterating over the results of the next() method and may give
@@ -134,45 +133,13 @@ public static SortedSet<IntegerPartition> partitionsOf(int n) {
 		return partitions;
 	}
 
-	private static void printNumberOfPartitions(int n) {
-		long start = System.currentTimeMillis();
+	public static long getNumberOfPartitions(int n) {
 		IntegerPartitionGenerator partGen = new IntegerPartitionGenerator(n);
-		int count = 0;
+		long count = 0;
 		while (partGen.hasNext()) {
 			partGen.next();
 			count++;
 		}
-    	LOG.debug("maxStackSize = " + partGen.maxStackSize);
-		LOG.info(n + " has " + count + " partitions (computed in " + (System.currentTimeMillis()-start) + "ms)");
+		return count;
 	}
-
-	/**
-	 * Test
-	 * @param args ignored
-	 */
-	public static void main(String[] args) {
-    	ConfigUtil.initProject();
-    	
-		while(true) {
-			String input;
-			try {
-				LOG.info("\nPlease insert (small) integer number:");
-				BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
-				String line = in.readLine();
-				input = line.trim();
-				//LOG.debug("input = " + input);
-			} catch (IOException ioe) {
-				LOG.error("io-error occurring on input: " + ioe.getMessage());
-				continue;
-			}
-			try {
-				int n = Integer.valueOf(input);
-				printNumberOfPartitions(n);
-				//SortedSet<IntegerPartition> partitions = partitionsOf(n);
-				//LOG.debug(n + " has " + partitions.size() + " partitions: " + partitions);
-			} catch (NumberFormatException nfe) {
-				LOG.error("input " + input + " is not an integer");
-			}
-		} // next input...
-    }
 }

src/test/java/de/tilman_neumann/jml/partitions/IntegerPartitionGeneratorRunner.java

@@ -0,0 +1,69 @@
+/*
+ * java-math-library is a Java library focused on number theory, but not necessarily limited to it. It is based on the PSIQS 4.0 factoring project.
+ * Copyright (C) 2018-2024 Tilman Neumann - [email protected]
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program;
+ * if not, see <http://www.gnu.org/licenses/>.
+ */
+package de.tilman_neumann.jml.partitions;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.SortedSet;
+
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+
+import de.tilman_neumann.util.ConfigUtil;
+
+/**
+ * Integer partition generator test runner.
+ * @author Tilman Neumann
+ */
+public class IntegerPartitionGeneratorRunner {
+
+	private static final Logger LOG = LogManager.getLogger(IntegerPartitionGeneratorRunner.class);
+	
+	private static final boolean DEBUG = false;
+
+	/**
+	 * Test
+	 * @param args ignored
+	 */
+	public static void main(String[] args) {
+    	ConfigUtil.initProject();
+    	
+		while(true) {
+			String input;
+			try {
+				LOG.info("\nPlease insert (small) integer number:");
+				BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+				String line = in.readLine();
+				input = line.trim();
+				//LOG.debug("input = " + input);
+			} catch (IOException ioe) {
+				LOG.error("io-error occurring on input: " + ioe.getMessage());
+				continue;
+			}
+			try {
+				int n = Integer.valueOf(input);
+				long start = System.currentTimeMillis();
+				long count = IntegerPartitionGenerator.getNumberOfPartitions(n);
+				LOG.info(n + " has " + count + " partitions (computed in " + (System.currentTimeMillis()-start) + "ms)");
+				if (DEBUG) {
+					SortedSet<IntegerPartition> partitions = IntegerPartitionGenerator.partitionsOf(n);
+					LOG.debug(n + " has " + partitions.size() + " partitions: " + partitions);
+				}
+			} catch (NumberFormatException nfe) {
+				LOG.error("input " + input + " is not an integer");
+			}
+		} // next input...
+    }
+}