From db6ca1387dd10459ff4c03c74da2566d00564009 Mon Sep 17 00:00:00 2001
From: Andreas Huber <bitbucket@lucares.de>
Date: Thu, 9 Nov 2017 09:33:19 +0100
Subject: [PATCH] add replaceAll

---
 .../java/org/lucares/collections/IntList.java  | 15 ++++++++++++++-
 .../lucares/collections/UnaryIntOperator.java  | 18 ++++++++++++++++++
 .../org/lucares/collections/IntListTest.java   | 17 +++++++++++++++++
 3 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 primitiveCollections/src/main/java/org/lucares/collections/UnaryIntOperator.java

diff --git a/primitiveCollections/src/main/java/org/lucares/collections/IntList.java b/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
index 3cfb94b..88f3932 100644
--- a/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
+++ b/primitiveCollections/src/main/java/org/lucares/collections/IntList.java
@@ -27,7 +27,6 @@ public final class IntList implements Serializable, Cloneable {
 	// TODO add replace
 	// TODO add lastIndexOf
 	// TODO remove bounds checks that are handled by java, e.g. negative indices
-	// TODO toString
 
 	private static final long serialVersionUID = 2622570032686034909L;
 
@@ -229,6 +228,20 @@ public final class IntList implements Serializable, Cloneable {
 		index = index - (toIndex - fromIndex);
 	}
 
+	/**
+	 * Replaces all values in the list by applying {@code operator}.
+	 *
+	 * @param operator
+	 *            the operator
+	 */
+	public void replaceAll(final UnaryIntOperator operator) {
+		final int size = index;
+
+		for (int i = 0; i < size; i++) {
+			data[i] = operator.apply(data[i]);
+		}
+	}
+
 	/**
 	 * Returns the element at position {@code pos}.
 	 *
diff --git a/primitiveCollections/src/main/java/org/lucares/collections/UnaryIntOperator.java b/primitiveCollections/src/main/java/org/lucares/collections/UnaryIntOperator.java
new file mode 100644
index 0000000..1f63678
--- /dev/null
+++ b/primitiveCollections/src/main/java/org/lucares/collections/UnaryIntOperator.java
@@ -0,0 +1,18 @@
+package org.lucares.collections;
+
+import java.util.function.Function;
+
+/**
+ * Represents an operation that maps an int to an int. This is a specialization
+ * of {@link Function} for a primitive integer.
+ */
+public interface UnaryIntOperator {
+	/**
+	 * Applies the operation to the integer
+	 * 
+	 * @param value
+	 *            the input value
+	 * @return the result of the operation
+	 */
+	int apply(int value);
+}
diff --git a/primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java b/primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java
index d0294ad..d85c23d 100644
--- a/primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java
+++ b/primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java
@@ -615,4 +615,21 @@ public class IntListTest {
 		Assert.assertEquals(list.get(list.indexOf(2, 2)), 2);
 		Assert.assertEquals(list.get(list.indexOf(2, 3)), 2);
 	}
+
+	@Test
+	public void replaceAll() {
+		final IntList list = new IntList();
+		list.addAll(1, 2, 3);
+
+		list.replaceAll(i -> i * 2);
+		Assert.assertArrayEquals(new int[] { 2, 4, 6 }, list.toArray());
+	}
+
+	@Test
+	public void replaceAllOnEmptyList() {
+		final IntList list = new IntList();
+
+		list.replaceAll(i -> i * 3);
+		Assert.assertArrayEquals(new int[0], list.toArray());
+	}
 }