修改arraylist

onlyliuxin · Feb 26, 2017 · 4e61361 · 4e61361
1 parent 8e7b643
commit 4e61361
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/group19/604322962/learning2017/src/main/java/com/coding/basic/ArrayList.java b/group19/604322962/learning2017/src/main/java/com/coding/basic/ArrayList.java
@@ -30,7 +30,11 @@ public Object get(int index){
 	}
 
 	public Object remove(int index){
-		return null;
+		checkIndex(index);
+		Object obj = elementData[index];
+		System.arraycopy(elementData, index+1, elementData, index,
+				size - index-1);
+		return obj;
 	}
 
 	public int size(){
@@ -45,5 +49,5 @@ private void checkIndex(int index){
 		if (index>elementData.length)
 			throw new IndexOutOfBoundsException();
 	}
-	
+
 }