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/*
* Copyright (C) 2003-2017 Paolo Boldi and Sebastiano Vigna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package PACKAGE;
#if KEY_CLASS_Object
import java.util.Comparator;
import it.unimi.dsi.fastutil.IndirectPriorityQueue;
#endif
import it.unimi.dsi.fastutil.ints.IntArrays;
import it.unimi.dsi.fastutil.AbstractIndirectPriorityQueue;
import java.util.NoSuchElementException;
/** A type-specific array-based semi-indirect priority queue.
*
* Instances of this class use as reference list a reference array,
* which must be provided to each constructor, and represent a priority queue
* using a backing array of integer indices—all operations are performed
* directly on the array. The array is enlarged as needed, but it is never
* shrunk. Use the {@link #trim()} method to reduce its size, if necessary.
*
*
This implementation is extremely inefficient, but it is difficult to beat
* when the size of the queue is very small. Moreover, it allows to enqueue several
* time the same index, without limitations.
*/
public class ARRAY_INDIRECT_PRIORITY_QUEUE KEY_GENERIC extends AbstractIndirectPriorityQueue implements INDIRECT_PRIORITY_QUEUE KEY_GENERIC {
/** The reference array. */
protected KEY_GENERIC_TYPE refArray[];
/** The backing array. */
protected int array[] = IntArrays.EMPTY_ARRAY;
/** The number of elements in this queue. */
protected int size;
/** The type-specific comparator used in this queue. */
protected KEY_COMPARATOR KEY_SUPER_GENERIC c;
/** The first index, cached, if {@link #firstIndexValid} is true. */
protected int firstIndex;
/** Whether {@link #firstIndex} contains a valid value. */
protected boolean firstIndexValid;
/** Creates a new empty queue without elements with a given capacity and comparator.
*
* @param refArray the reference array.
* @param capacity the initial capacity of this queue.
* @param c the comparator used in this queue, or {@code null} for the natural order.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(KEY_GENERIC_TYPE[] refArray, int capacity, KEY_COMPARATOR KEY_SUPER_GENERIC c) {
if (capacity > 0) this.array = new int[capacity];
this.refArray = refArray;
this.c = c;
}
/** Creates a new empty queue with given capacity and using the natural order.
*
* @param refArray the reference array.
* @param capacity the initial capacity of this queue.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(KEY_GENERIC_TYPE[] refArray, int capacity) {
this(refArray, capacity, null);
}
/** Creates a new empty queue with capacity equal to the length of the reference array and a given comparator.
*
* @param refArray the reference array.
* @param c the comparator used in this queue, or {@code null} for the natural order.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(KEY_GENERIC_TYPE[] refArray, KEY_COMPARATOR KEY_SUPER_GENERIC c) {
this(refArray, refArray.length, c);
}
/** Creates a new empty queue with capacity equal to the length of the reference array and using the natural order.
* @param refArray the reference array.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(KEY_GENERIC_TYPE[] refArray) {
this(refArray, refArray.length, null);
}
/** Wraps a given array in a queue using a given comparator.
*
* The queue returned by this method will be backed by the given array.
*
* @param refArray the reference array.
* @param a an array of indices into refArray.
* @param size the number of elements to be included in the queue.
* @param c the comparator used in this queue, or {@code null} for the natural order.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(final KEY_GENERIC_TYPE[] refArray, final int[] a, int size, final KEY_COMPARATOR KEY_SUPER_GENERIC c) {
this(refArray, 0, c);
this.array = a;
this.size = size;
}
/** Wraps a given array in a queue using a given comparator.
*
*
The queue returned by this method will be backed by the given array.
*
* @param refArray the reference array.
* @param a an array of indices into refArray.
* @param c the comparator used in this queue, or {@code null} for the natural order.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(final KEY_GENERIC_TYPE[] refArray, final int[] a, final KEY_COMPARATOR KEY_SUPER_GENERIC c) {
this(refArray, a, a.length, c);
}
/** Wraps a given array in a queue using the natural order.
*
*
The queue returned by this method will be backed by the given array.
*
* @param refArray the reference array.
* @param a an array of indices into refArray.
* @param size the number of elements to be included in the queue.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(final KEY_GENERIC_TYPE[] refArray, final int[] a, int size) {
this(refArray, a, size, null);
}
/** Wraps a given array in a queue using the natural order.
*
*
The queue returned by this method will be backed by the given array.
*
* @param refArray the reference array.
* @param a an array of indices into refArray.
*/
public ARRAY_INDIRECT_PRIORITY_QUEUE(final KEY_GENERIC_TYPE[] refArray, final int[] a) {
this(refArray, a, a.length);
}
/** Returns the index (in {@link #array}) of the smallest element. */
SUPPRESS_WARNINGS_KEY_UNCHECKED
private int findFirst() {
if (firstIndexValid) return this.firstIndex;
firstIndexValid = true;
int i = size;
int firstIndex = --i;
KEY_GENERIC_TYPE first = refArray[array[firstIndex]];
if (c == null) while(i-- != 0) { if (KEY_LESS(refArray[array[i]], first)) first = refArray[array[firstIndex = i]]; }
else while(i-- != 0) { if (c.compare(refArray[array[i]], first) < 0) first = refArray[array[firstIndex = i]]; }
return this.firstIndex = firstIndex;
}
/** Returns the index (in {@link #array}) of the largest element. */
SUPPRESS_WARNINGS_KEY_UNCHECKED
private int findLast() {
int i = size;
int lastIndex = --i;
KEY_GENERIC_TYPE last = refArray[array[lastIndex]];
if (c == null) { while(i-- != 0) if (KEY_LESS(last, refArray[array[i]])) last = refArray[array[lastIndex = i]]; }
else { while(i-- != 0) if (c.compare(last, refArray[array[i]]) < 0) last = refArray[array[lastIndex = i]]; }
return lastIndex;
}
protected final void ensureNonEmpty() {
if (size == 0) throw new NoSuchElementException();
}
/** Ensures that the given index is a firstIndexValid reference.
*
* @param index an index in the reference array.
* @throws IndexOutOfBoundsException if the given index is negative or larger than the reference array length.
*/
protected void ensureElement(final int index) {
if (index < 0) throw new IndexOutOfBoundsException("Index (" + index + ") is negative");
if (index >= refArray.length) throw new IndexOutOfBoundsException("Index (" + index + ") is larger than or equal to reference array size (" + refArray.length + ")");
}
/** {@inheritDoc}
*
*
Note that for efficiency reasons this method will not throw an exception
* when x is already in the queue. However, the queue state will become
* inconsistent and the following behaviour will not be predictable.
*/
@Override
SUPPRESS_WARNINGS_KEY_UNCHECKED
public void enqueue(int x) {
ensureElement(x);
if (size == array.length) array = IntArrays.grow(array, size + 1);
if (firstIndexValid) {
if (c == null) { if (KEY_LESS(refArray[x], refArray[array[firstIndex]])) firstIndex = size; }
else if (c.compare(refArray[x], refArray[array[firstIndex]]) < 0) firstIndex = size;
}
else firstIndexValid = false;
array[size++] = x;
}
@Override
public int dequeue() {
ensureNonEmpty();
final int firstIndex = findFirst();
final int result = array[firstIndex];
if (--size != 0) System.arraycopy(array, firstIndex + 1, array, firstIndex, size - firstIndex);
firstIndexValid = false;
return result;
}
@Override
public int first() {
ensureNonEmpty();
return array[findFirst()];
}
@Override
public int last() {
ensureNonEmpty();
return array[findLast()];
}
@Override
public void changed() {
ensureNonEmpty();
firstIndexValid = false;
}
/** {@inheritDoc}
*
*
Note that for efficiency reasons this method will not throw an exception
* when index is not in the queue.
*/
@Override
public void changed(int index) {
ensureElement(index);
if (index == firstIndex) firstIndexValid = false;
}
/** Signals the queue that all elements have changed. */
public void allChanged() {
firstIndexValid = false;
}
@Override
public boolean remove(int index) {
ensureElement(index);
final int[] a = array;
int i = size;
while(i-- != 0) if (a[i] == index) break;
if (i < 0) return false;
firstIndexValid = false;
if (--size != 0) System.arraycopy(a, i + 1, a, i, size - i);
return true;
}
/** Writes in the provided array the front of the queue, that is, the set of indices
* whose elements have the same priority as the top.
* @param a an array whose initial part will be filled with the frnot (must be sized as least as the heap size).
* @return the number of elements of the front.
*/
public int front(int[] a) {
final KEY_GENERIC_TYPE top = refArray[array[findFirst()]];
int i = size, c = 0;
while(i-- != 0) if (KEY_EQUALS_NOT_NULL(top, refArray[array[i]])) a[c++] = array[i];
return c;
}
@Override
public int size() { return size; }
@Override
public void clear() { size = 0; firstIndexValid = false; }
/** Trims the backing array so that it has exactly {@link #size()} elements. */
public void trim() {
array = IntArrays.trim(array, size);
}
@Override
public KEY_COMPARATOR KEY_SUPER_GENERIC comparator() { return c; }
@Override
public String toString() {
StringBuffer s = new StringBuffer();
s.append("[");
for (int i = 0; i < size; i++) {
if (i != 0) s.append(", ");
s.append(refArray[array [i]]);
}
s.append("]");
return s.toString();
}
#ifdef TEST
private static long seed = System.currentTimeMillis();
private static java.util.Random r = new java.util.Random(seed);
private static KEY_TYPE genKey() {
#if KEY_CLASS_Byte || KEY_CLASS_Short || KEY_CLASS_Character
return (KEY_TYPE)(r.nextInt());
#elif KEYS_PRIMITIVE
return r.NEXT_KEY();
#elif KEY_CLASS_Object
return Integer.toBinaryString(r.nextInt());
#else
return new java.io.Serializable() {};
#endif
}
private static java.text.NumberFormat format = new java.text.DecimalFormat("#,###.00");
private static java.text.FieldPosition p = new java.text.FieldPosition(0);
private static String format(double d) {
StringBuffer s = new StringBuffer();
return format.format(d, s, p).toString();
}
private static void speedTest(int n, boolean comp) {
int i, j, s;
ARRAY_INDIRECT_PRIORITY_QUEUE[] m = new ARRAY_INDIRECT_PRIORITY_QUEUE[100000];
HEAP_INDIRECT_PRIORITY_QUEUE[] t = new HEAP_INDIRECT_PRIORITY_QUEUE[m.length];
KEY_TYPE k[] = new KEY_TYPE[n];
KEY_TYPE nk[] = new KEY_TYPE[m.length];
long ms;
for(i = 0; i < n; i++) k[i] = genKey();
for(i = 0; i < m.length; i++) nk[i] = genKey();
double totEnq = 0, totDeq = 0, totChange = 0, d;
for(i = 0; i < m.length; i++) {
t[i] = new HEAP_INDIRECT_PRIORITY_QUEUE(k);
m[i] = new ARRAY_INDIRECT_PRIORITY_QUEUE(k);
}
if (comp) {
for(j = 0; j < 20; j++) {
for(i = 0; i < m.length; i++) t[i].clear();
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) t[s].enqueue(i); }
d = System.currentTimeMillis() - ms;
if (j > 2) totEnq += d;
System.out.print("Enqueue: " + format(m.length * n/d) +" K/s ");
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) { k[t[s].first()] = nk[i]; t[s].changed(); } }
d = System.currentTimeMillis() - ms;
if (j > 2) totChange += d;
System.out.print("Change: " + format(m.length * n/d) +" K/s ");
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) t[s].dequeue(); }
d = System.currentTimeMillis() - ms;
if (j > 2) totDeq += d;
System.out.print("Dequeue: " + format(m.length * n/d) +" K/s ");
System.out.println();
}
System.out.println();
System.out.println("Heap: Enqueue: " + format(m.length * (j-3)*n/totEnq) + " K/s Dequeue: " + format(m.length * (j-3)*n/totDeq) + " K/s Change: " + format(m.length * (j-3)*n/totChange) + " K/s");
System.out.println();
totEnq = totChange = totDeq = 0;
}
for(j = 0; j < 20; j++) {
for(i = 0; i < m.length; i++) m[i].clear();
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) m[s].enqueue(i); }
d = System.currentTimeMillis() - ms;
if (j > 2) totEnq += d;
System.out.print("Enqueue: " + format(m.length * n/d) +" K/s ");
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) { k[m[s].first()] = nk[i]; m[s].changed(); } }
d = System.currentTimeMillis() - ms;
if (j > 2) totChange += d;
System.out.print("Change: " + format(m.length * n/d) +" K/s ");
ms = System.currentTimeMillis();
s = m.length;
while(s-- != 0) { i = n; while(i-- != 0) m[s].dequeue(); }
d = System.currentTimeMillis() - ms;
if (j > 2) totDeq += d;
System.out.print("Dequeue: " + format(m.length * n/d) +" K/s ");
System.out.println();
}
System.out.println();
System.out.println("Array: Enqueue: " + format(m.length * (j-3)*n/totEnq) + " K/s Dequeue: " + format(m.length * (j-3)*n/totDeq) + " K/s Change: " + format(m.length * (j-3)*n/totChange) + " K/s");
System.out.println();
}
private static void fatal(String msg) {
System.out.println(msg);
System.exit(1);
}
private static void ensure(boolean cond, String msg) {
if (cond) return;
fatal(msg);
}
private static boolean heapEqual(int[] a, int[] b, int sizea, int sizeb) {
if (sizea != sizeb) return false;
KEY_TYPE[] aa = new KEY_TYPE[sizea];
KEY_TYPE[] bb = new KEY_TYPE[sizea];
for(int i = 0; i < sizea; i++) {
aa[i] = ref[a[i]];
bb[i] = ref[b[i]];
}
java.util.Arrays.sort(aa);
java.util.Arrays.sort(bb);
while(sizea-- != 0) if (!KEY_EQUALS(aa[sizea], bb[sizea])) return false;
return true;
}
private static KEY_TYPE[] ref;
protected static void test(int n) {
long ms;
Exception mThrowsIllegal, tThrowsIllegal, mThrowsOutOfBounds, tThrowsOutOfBounds, mThrowsNoElement, tThrowsNoElement;
int rm = 0, rt = 0;
ref = new KEY_TYPE[n];
for(int i = 0; i < n; i++) ref[i] = genKey();
ARRAY_INDIRECT_PRIORITY_QUEUE m = new ARRAY_INDIRECT_PRIORITY_QUEUE(ref);
HEAP_INDIRECT_PRIORITY_QUEUE t = new HEAP_INDIRECT_PRIORITY_QUEUE(ref);
/* We add pairs to t. */
for(int i = 0; i < n / 2; i++) {
t.enqueue(i);
m.enqueue(i);
}
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after creation (" + m + ", " + t + ")");
/* Now we add and remove random data in m and t, checking that the result is the same. */
for(int i=0; i<2*n; i++) {
if (r.nextDouble() < 0.01) {
t.clear();
m.clear();
for(int j = 0; j < n / 2; j++) {
t.enqueue(j);
m.enqueue(j);
}
}
int T = r.nextInt(2 * n);
mThrowsNoElement = tThrowsNoElement = mThrowsOutOfBounds = tThrowsOutOfBounds = mThrowsIllegal = tThrowsIllegal = null;
try {
t.enqueue(T);
}
catch (IndexOutOfBoundsException e) { tThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { tThrowsIllegal = e; }
if (tThrowsIllegal == null) { // To skip duplicates
try {
m.enqueue(T);
}
catch (IndexOutOfBoundsException e) { mThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { mThrowsIllegal = e; }
}
mThrowsIllegal = tThrowsIllegal = null; // To skip duplicates
ensure((mThrowsOutOfBounds == null) == (tThrowsOutOfBounds == null), "Error (" + seed + "): enqueue() divergence in IndexOutOfBoundsException for " + T + " (" + mThrowsOutOfBounds + ", " + tThrowsOutOfBounds + ")");
ensure((mThrowsIllegal == null) == (tThrowsIllegal == null), "Error (" + seed + "): enqueue() divergence in IllegalArgumentException for " + T + " (" + mThrowsIllegal + ", " + tThrowsIllegal + ")");
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after enqueue (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after enqueue (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
mThrowsNoElement = tThrowsNoElement = mThrowsOutOfBounds = tThrowsOutOfBounds = mThrowsIllegal = tThrowsIllegal = null;
try {
rm = m.dequeue();
while(! m.isEmpty() && KEY_EQUALS(ref[m.first()], ref[rm])) m.dequeue();
}
catch (IndexOutOfBoundsException e) { mThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { mThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { mThrowsNoElement = e; }
try {
rt = t.dequeue();
while(! t.isEmpty() && KEY_EQUALS(ref[t.first()], ref[rt])) t.dequeue();
}
catch (IndexOutOfBoundsException e) { tThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { tThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { tThrowsNoElement = e; }
ensure((mThrowsOutOfBounds == null) == (tThrowsOutOfBounds == null), "Error (" + seed + "): dequeue() divergence in IndexOutOfBoundsException (" + mThrowsOutOfBounds + ", " + tThrowsOutOfBounds + ")");
ensure((mThrowsIllegal == null) == (tThrowsIllegal == null), "Error (" + seed + "): dequeue() divergence in IllegalArgumentException (" + mThrowsIllegal + ", " + tThrowsIllegal + ")");
ensure((mThrowsNoElement == null) == (tThrowsNoElement == null), "Error (" + seed + "): dequeue() divergence in java.util.NoSuchElementException (" + mThrowsNoElement + ", " + tThrowsNoElement + ")");
if (mThrowsOutOfBounds == null) ensure(KEY_EQUALS(ref[rt], ref[rm]), "Error (" + seed + "): divergence in dequeue() between m and t (" + rm + "->" + ref[rm] + ", " + rt + "->" + ref[rt] + ")");
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after dequeue (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after dequeue (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
mThrowsNoElement = tThrowsNoElement = mThrowsOutOfBounds = tThrowsOutOfBounds = mThrowsIllegal = tThrowsIllegal = null;
int pos = r.nextInt(n * 2);
try {
m.remove(pos);
}
catch (IndexOutOfBoundsException e) { mThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { mThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { mThrowsNoElement = e; }
try {
t.remove(pos);
}
catch (IndexOutOfBoundsException e) { tThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { tThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { tThrowsNoElement = e; }
ensure((mThrowsOutOfBounds == null) == (tThrowsOutOfBounds == null), "Error (" + seed + "): remove(int) divergence in IndexOutOfBoundsException (" + mThrowsOutOfBounds + ", " + tThrowsOutOfBounds + ")");
ensure((mThrowsIllegal == null) == (tThrowsIllegal == null), "Error (" + seed + "): remove(int) divergence in IllegalArgumentException (" + mThrowsIllegal + ", " + tThrowsIllegal + ")");
ensure((mThrowsNoElement == null) == (tThrowsNoElement == null), "Error (" + seed + "): remove(int) divergence in java.util.NoSuchElementException (" + mThrowsNoElement + ", " + tThrowsNoElement + ")");
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after remove(int) (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after remove(int) (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
mThrowsNoElement = tThrowsNoElement = mThrowsOutOfBounds = tThrowsOutOfBounds = mThrowsIllegal = tThrowsIllegal = null;
pos = r.nextInt(n);
try {
t.changed(pos);
}
catch (IndexOutOfBoundsException e) { tThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { tThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { tThrowsNoElement = e; }
if (tThrowsIllegal == null) {
try {
m.changed(pos);
}
catch (IndexOutOfBoundsException e) { mThrowsOutOfBounds = e; }
catch (IllegalArgumentException e) { mThrowsIllegal = e; }
catch (java.util.NoSuchElementException e) { mThrowsNoElement = e; }
}
ensure((mThrowsOutOfBounds == null) == (tThrowsOutOfBounds == null), "Error (" + seed + "): change(int) divergence in IndexOutOfBoundsException (" + mThrowsOutOfBounds + ", " + tThrowsOutOfBounds + ")");
//ensure((mThrowsIllegal == null) == (tThrowsIllegal == null), "Error (" + seed + "): change(int) divergence in IllegalArgumentException (" + mThrowsIllegal + ", " + tThrowsIllegal + ")");
ensure((mThrowsNoElement == null) == (tThrowsNoElement == null), "Error (" + seed + "): change(int) divergence in java.util.NoSuchElementException (" + mThrowsNoElement + ", " + tThrowsNoElement + ")");
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after change(int) (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after change(int) (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
int[] temp = (int[])t.heap.clone();
java.util.Arrays.sort(temp, 0, t.size()); // To scramble a bit
m = new ARRAY_INDIRECT_PRIORITY_QUEUE(m.refArray, temp, t.size());
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after wrap (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after wrap (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
if (m.size() != 0 && ((new it.unimi.dsi.fastutil.ints.IntOpenHashSet(m.array, 0, m.size)).size() == m.size())) {
int first = m.first();
ref[first] = genKey();
//System.err.println("Pre-change m: " +m);
//System.err.println("Pre-change t: " +t);
m.changed();
t.changed(first);
//System.err.println("Post-change m: " +m);
//System.err.println("Post-change t: " +t);
ensure(heapEqual(m.array, t.heap, m.size(), t.size()), "Error (" + seed + "): m and t differ after change (" + m + ", " + t + ")");
if (m.size() != 0) {
ensure(KEY_EQUALS(ref[m.first()], ref[t.first()]), "Error (" + seed + "): m and t differ in first element after change (" + m.first() + "->" + ref[m.first()] + ", " + t.first() + "->" + ref[t.first()] + ")");
}
}
}
/* Now we check that m actually holds the same data. */
m.clear();
ensure(m.isEmpty(), "Error (" + seed + "): m is not empty after clear()");
System.out.println("Test OK");
}
public static void main(String args[]) {
int n = Integer.parseInt(args[1]);
if (args.length > 2) r = new java.util.Random(seed = Long.parseLong(args[2]));
try {
if ("speedTest".equals(args[0]) || "speedComp".equals(args[0])) speedTest(n, "speedComp".equals(args[0]));
else if ("test".equals(args[0])) test(n);
} catch(Throwable e) {
e.printStackTrace(System.err);
System.err.println("seed: " + seed);
}
}
#endif
}