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<div class="subTitle">com.badlogic.gdx.utils</div>
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<h2 title="Class Queue" class="title">Class Queue<T></h2>
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<pre>public class <span class="typeNameLabel">Queue<T></span>
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extends java.lang.Object
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implements java.lang.Iterable<T></pre>
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<div class="block">A resizable, ordered array of objects with efficient add and remove at the beginning and end. Values in the backing array may
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wrap back to the beginning, making add and remove at the beginning and end O(1) (unless the backing array needs to resize when
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adding). Deque functionality is provided via <a href="../../../../com/badlogic/gdx/utils/Queue.html#removeLast--"><code>removeLast()</code></a> and <a href="../../../../com/badlogic/gdx/utils/Queue.html#addFirst-T-"><code>addFirst(Object)</code></a>.</div>
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<td class="colFirst"><code>static class </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.QueueIterable.html" title="class in com.badlogic.gdx.utils">Queue.QueueIterable</a><<a href="../../../../com/badlogic/gdx/utils/Queue.QueueIterable.html" title="type parameter in Queue.QueueIterable">T</a>></span></code> </td>
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<td class="colFirst"><code>static class </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.QueueIterator.html" title="class in com.badlogic.gdx.utils">Queue.QueueIterator</a><<a href="../../../../com/badlogic/gdx/utils/Queue.QueueIterator.html" title="type parameter in Queue.QueueIterator">T</a>></span></code> </td>
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<td class="colFirst"><code>protected int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#head">head</a></span></code>
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<div class="block">Index of first element.</div>
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#size">size</a></span></code>
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<div class="block">Number of elements in the queue.</div>
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<td class="colFirst"><code>protected int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#tail">tail</a></span></code>
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<div class="block">Index of last element.</div>
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<td class="colFirst"><code>protected <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>[]</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#values">values</a></span></code>
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<div class="block">Contains the values in the queue.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#Queue--">Queue</a></span>()</code>
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<div class="block">Creates a new Queue which can hold 16 values without needing to resize backing array.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#Queue-int-">Queue</a></span>(int initialSize)</code>
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<div class="block">Creates a new Queue which can hold the specified number of values without needing to resize backing array.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#Queue-int-java.lang.Class-">Queue</a></span>(int initialSize,
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java.lang.Class<<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>> type)</code>
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<div class="block">Creates a new Queue which can hold the specified number of values without needing to resize backing array.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#addFirst-T-">addFirst</a></span>(<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> object)</code>
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<div class="block">Prepend given object to the head.</div>
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</td>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#addLast-T-">addLast</a></span>(<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> object)</code>
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<div class="block">Append given object to the tail.</div>
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</td>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#clear--">clear</a></span>()</code>
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<div class="block">Removes all values from this queue.</div>
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</td>
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</tr>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#ensureCapacity-int-">ensureCapacity</a></span>(int additional)</code>
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<div class="block">Increases the size of the backing array to accommodate the specified number of additional items.</div>
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</td>
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<tr id="i4" class="altColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#equals-java.lang.Object-">equals</a></span>(java.lang.Object o)</code> </td>
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</tr>
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<tr id="i5" class="rowColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#first--">first</a></span>()</code>
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<div class="block">Returns the first (head) item in the queue (without removing it).</div>
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</td>
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</tr>
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<tr id="i6" class="altColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#get-int-">get</a></span>(int index)</code>
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<div class="block">Retrieves the value in queue without removing it.</div>
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</td>
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<tr id="i7" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#hashCode--">hashCode</a></span>()</code> </td>
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<tr id="i8" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#indexOf-T-boolean-">indexOf</a></span>(<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> value,
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boolean identity)</code>
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<div class="block">Returns the index of first occurrence of value in the queue, or -1 if no such value exists.</div>
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</td>
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<tr id="i9" class="rowColor">
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<td class="colFirst"><code>java.util.Iterator<<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#iterator--">iterator</a></span>()</code>
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<div class="block">Returns an iterator for the items in the queue.</div>
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</td>
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</tr>
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<tr id="i10" class="altColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#last--">last</a></span>()</code>
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<div class="block">Returns the last (tail) item in the queue (without removing it).</div>
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</td>
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<tr id="i11" class="rowColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#removeFirst--">removeFirst</a></span>()</code>
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<div class="block">Remove the first item from the queue.</div>
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</td>
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<tr id="i12" class="altColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#removeIndex-int-">removeIndex</a></span>(int index)</code>
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<div class="block">Removes and returns the item at the specified index.</div>
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</td>
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</tr>
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<tr id="i13" class="rowColor">
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<td class="colFirst"><code><a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#removeLast--">removeLast</a></span>()</code>
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<div class="block">Remove the last item from the queue.</div>
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</td>
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<tr id="i14" class="altColor">
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#removeValue-T-boolean-">removeValue</a></span>(<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> value,
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boolean identity)</code>
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<div class="block">Removes the first instance of the specified value in the queue.</div>
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</td>
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<tr id="i15" class="rowColor">
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<td class="colFirst"><code>protected void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#resize-int-">resize</a></span>(int newSize)</code>
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<div class="block">Resize backing array.</div>
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</td>
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<tr id="i16" class="altColor">
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<td class="colFirst"><code>java.lang.String</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/badlogic/gdx/utils/Queue.html#toString--">toString</a></span>()</code> </td>
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<pre>protected <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>[] values</pre>
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java.lang.Class<<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>> type)</pre>
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<div class="block">Append given object to the tail. (enqueue to tail) Unless backing array needs resizing, operates in O(1) time.</div>
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<div class="block">Prepend given object to the head. (enqueue to head) Unless backing array needs resizing, operates in O(1) time.</div>
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<dd><a href="../../../../com/badlogic/gdx/utils/Queue.html#addLast-T-"><code>addLast(Object)</code></a></dd>
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<div class="block">Remove the first item from the queue. (dequeue from head) Always O(1).</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd><code>java.util.NoSuchElementException</code> - when queue is empty</dd>
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<pre>public <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> removeLast()</pre>
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<div class="block">Remove the last item from the queue. (dequeue from tail) Always O(1).</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd><code>java.util.NoSuchElementException</code> - when queue is empty</dd>
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<dd><a href="../../../../com/badlogic/gdx/utils/Queue.html#removeFirst--"><code>removeFirst()</code></a></dd>
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<pre>public int indexOf(<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> value,
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<div class="block">Returns the index of first occurrence of value in the queue, or -1 if no such value exists.</div>
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boolean identity)</pre>
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<div class="block">Removes the first instance of the specified value in the queue.</div>
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<dd>true if value was found and removed, false otherwise</dd>
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<pre>public <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> removeIndex(int index)</pre>
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<div class="block">Removes and returns the item at the specified index.</div>
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<pre>public <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> first()</pre>
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<div class="block">Returns the first (head) item in the queue (without removing it).</div>
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<dd><code>java.util.NoSuchElementException</code> - when queue is empty</dd>
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<dd><a href="../../../../com/badlogic/gdx/utils/Queue.html#addFirst-T-"><code>addFirst(Object)</code></a>,
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<pre>public <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> last()</pre>
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<div class="block">Returns the last (tail) item in the queue (without removing it).</div>
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<dd><code>java.util.NoSuchElementException</code> - when queue is empty</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../../com/badlogic/gdx/utils/Queue.html#addLast-T-"><code>addLast(Object)</code></a>,
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<a href="../../../../com/badlogic/gdx/utils/Queue.html#removeLast--"><code>removeLast()</code></a></dd>
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<pre>public <a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a> get(int index)</pre>
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<div class="block">Retrieves the value in queue without removing it. Indexing is from the front to back, zero based. Therefore get(0) is the
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same as <a href="../../../../com/badlogic/gdx/utils/Queue.html#first--"><code>first()</code></a>.</div>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code>java.lang.IndexOutOfBoundsException</code> - when the index is negative or >= size</dd>
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<pre>public void clear()</pre>
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<div class="block">Removes all values from this queue. Values in backing array are set to null to prevent memory leak, so this operates in
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O(n).</div>
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<pre>public java.util.Iterator<<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>> iterator()</pre>
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<div class="block">Returns an iterator for the items in the queue. Remove is supported. Note that the same iterator instance is returned each
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time this method is called. Use the <a href="../../../../com/badlogic/gdx/utils/Queue.QueueIterator.html" title="class in com.badlogic.gdx.utils"><code>Queue.QueueIterator</code></a> constructor for nested or multithreaded iteration.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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<dd><code>iterator</code> in interface <code>java.lang.Iterable<<a href="../../../../com/badlogic/gdx/utils/Queue.html" title="type parameter in Queue">T</a>></code></dd>
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<dd><code>equals</code> in class <code>java.lang.Object</code></dd>
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