Java Utililty Methods Queue Usage

List of utility methods to do Queue Usage

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Description

The list of methods to do Queue Usage are organized into topic(s).

Method

ListloadBalancingLeftHeavy(List tasks, int size)
load Balancing Left Heavy 
Queue<T> sucQueue = new LinkedList<T>();
sucQueue.addAll(tasks);
int todo_size = sucQueue.size();
List<List<T>> pList = new ArrayList<List<T>>(size);
for (int i = 0; i < size; i++)
    pList.add(new LinkedList<T>());
T t1;
int b = 0;
...
voidofferUntilSuccess(T entry, Queue queue)
Certain types of queues will fail to java.util.Queue#offer(Object) an item due to many factors depending on the type of queue. 
boolean success;
do {
    success = queue.offer(entry);
    Thread.yield();
} while (!success);
QueueparsePathToStack(String path)
parse Path To Stack 
Queue<String> queue = new LinkedList<>();
String[] pathParts = path.split("/");
if (pathParts != null && pathParts.length > 0) {
    for (String part : pathParts) {
        if (part.length() > 0) {
            queue.add(part);
return queue;
TpollWhileNotEmpty(Queue queue)
Certain types of queues will return null when calling java.util.Queue#poll() due to many factors depending on the type of queue. 
T item = queue.poll();
while (!queue.isEmpty() && item == null) {
    Thread.yield();
    item = queue.poll();
return item;
voidqueue(final Queue queue, final Object o, final Class clazz, final boolean removeNull)
Cast the object and feel the queue. 
if (o != null && Queue.class.isAssignableFrom(o.getClass())) {
    Queue<?> mObj = (Queue<?>) o;
    for (Object obj : mObj) {
        setQueueValue(queue, obj, clazz, removeNull);
char[]randomizeIndex(char[] array)
randomize Index 
char[] randomArray = new char[array.length];
List<Integer> set = new ArrayList<>();
while (set.size() < array.length) {
    int index = (int) (Math.random() * array.length);
    if (!set.contains(index)) {
        set.add(index);
Queue<Integer> queue = new LinkedList<>(set);
int i = 0;
while (!queue.isEmpty()) {
    randomArray[i++] = array[queue.poll()];
return randomArray;
Stringscramble(Object object)
Will alter the order of the letters in the String representation of an Object. 
String string = object.toString();
char[] array = string.toCharArray();
char[] randomArray = randomizeIndex(array);
return new String(randomArray);
voidsetQueueValue(final Queue queue, final Object obj, final Class clazz, final boolean removeNull)
Set the queue value. 
if (obj != null && clazz.isAssignableFrom(obj.getClass())) {
    queue.add(clazz.cast(obj));
} else if (obj == null && !removeNull) {
    queue.add(null);
voidtoArrayTest(Queue q)
to Array Test 
if (q.toArray().length != 0) {
    throw new RuntimeException();
Object testObject = new Object();
q.add(testObject);
Object[] result = q.toArray();
verify(result.length == 1);
verify(result[0] == testObject);
...
voidtransferAllElementsFromListToQueue(final List elements, Queue queue)
transfer All Elements From List To Queue 
for (final Type element : elements) {
    queue.add(element);