Merge "IntList: support contains(int)"

org.eclipse.jgit.test/tst/org/eclipse/jgit/util/IntListTest.java

@@ -44,6 +44,7 @@
 package org.eclipse.jgit.util;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -185,6 +186,16 @@ public class IntListTest {
 		assertEquals(2, i.get(1));
 	}
 
+	@Test
+	public void testContains() {
+		IntList i = new IntList();
+		i.add(1);
+		i.add(4);
+		assertTrue(i.contains(1));
+		assertTrue(i.contains(4));
+		assertFalse(i.contains(2));
+	}
+
 	@Test
 	public void testToString() {
 		final IntList i = new IntList();

org.eclipse.jgit/src/org/eclipse/jgit/util/IntList.java

@@ -70,6 +70,21 @@ public class IntList {
 		return count;
 	}
 
+	/**
+	 * Check if an entry appears in this collection.
+	 *
+	 * @param value
+	 *            the value to search for.
+	 * @return true of {@code value} appears in this list.
+	 * @since 4.9
+	 */
+	public boolean contains(int value) {
+		for (int i = 0; i < count; i++)
+			if (entries[i] == value)
+				return true;
+		return false;
+	}
+
 	/**
 	 * @param i
 	 *            index to read, must be in the range [0, {@link #size()}).