隊列（JAVA實現(xiàn)）“>數(shù)據(jù)結(jié)構(gòu)->隊列（JAVA實現(xiàn)）

/**
* 判斷是否存在
*/
@Override
public boolean contains(Object object) {

LinkNode linkNodeNowTemp = headNode;

for (int i = 0; i < nodeSize; i++) {

if (object == linkNodeNowTemp.date) {
return true;
}

linkNodeNowTemp = linkNodeNowTemp.nextLinkNode;
}

return false;
}

/**
* 隊列是否為空
*/
@Override
public boolean isEmpty() {
// TODO Auto-generated method stub
return nodeSize == 0;
}

@Override
public int size() {
// TODO Auto-generated method stub
return nodeSize;
}

/**
* 根據(jù)索引號查找節(jié)點
*
* @param index
* @return
*/
public LinkNode findLinkNodeByIndex(int index) {

LinkNode linkNodeNowTemp = headNode;

for (int i = 0; i < nodeSize; i++) {

if (i == index) {
return linkNodeNowTemp;
}

linkNodeNowTemp = linkNodeNowTemp.nextLinkNode;
}
return null;
}

@Override
public String toString() {

StringBuffer str = new StringBuffer("[");
LinkNode linkNode = null;
for (int i = 0; i < nodeSize; i++) {

linkNode = findLinkNodeByIndex(i);

str.append("[" + linkNode.date + "],");

}

if (nodeSize > 0) {
return str.substring(0, str.lastIndexOf(",")) + "]";
}

return str.append("]").toString();
}

}