Java Utililty Methods Deque Usage

List of utility methods to do Deque Usage

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Deque Usage

Description

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

Method

void addSegment(Deque outputBuffer, String nextSegment)
add Segment

outputBuffer.push(nextSegment);

String buildQueryString(final Map> params)
build Query String

StringBuilder sb = new StringBuilder();
boolean first = true;
for (Map.Entry<String, Deque<String>> entry : params.entrySet()) {
 if (entry.getValue().isEmpty()) {
 if (first) {
 first = false;
 } else {
 sb.append('&');
...

Deque[] createEmptyDequeArray(int size)
create Empty Deque Array

Deque<?>[] deque = new ArrayDeque<?>[size];
for (int i = 0; i < size; i++)
 deque[i] = new ArrayDeque<T>();
return deque;

Deque emptyDeque()
empty Deque

return EMPTY_DEQUE;

Deque getArrayDeque()
get Array Deque

return new ArrayDeque<E>();

T getLast(List list)
get Last

if (list instanceof Deque) {
 return ((Deque<T>) list).getLast();
return list.get(list.size() - 1);

T pop(Deque deque, T def)
Pop the first object from a deque, if it exists.

T o = def;
return deque.isEmpty() ? def : (o = deque.pop()) == null ? def : o;

void removeLastTest(Deque q)
remove Last Test

Object firstObject = new Object();
Object lastObject = new Object();
q.addLast(firstObject);
q.addLast(lastObject);
verify(q.removeLast() == lastObject);
verify(q.removeLast() == firstObject);

List splitWords(String text)
split Words

List<String> result = new ArrayList<>();
char[] chars = text.toCharArray();
int begin = 0;
boolean word = false;
for (int i = 0; i < chars.length; i++) {
 if (Character.isWhitespace(chars[i])) {
 if (word) {
 result.add(new String(chars, begin, i - begin));
...