本文整理汇总了C++中DLList::removeFirst方法的典型用法代码示例。如果您正苦于以下问题：C++ DLList::removeFirst方法的具体用法？C++ DLList::removeFirst怎么用？C++ DLList::removeFirst使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DLList的用法示例。
在下文中一共展示了DLList::removeFirst方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: processFile
//.........这里部分代码省略.........
break;
//if the character is E
case 'E':
//get the integer that follows the character
ss.str(nextLine.substr(2));
ss >> value;
//attempt to remove all instances of Nodes with the integer value from the list
if (list->removeAll(value) == true) {
//output success to the console
cout << "VALUE " << value << " ELIMINATED" << endl;
} else {
//output failure to the console
cout << "VALUE " << value << " NOT FOUND" << endl;
}
//clear the stringstream
ss.clear();
break;
//if the character is R
case 'R':
//get the integer value that follows the character
ss.str(nextLine.substr(2));
ss >> value;
//attempt to remove the first instance of a Node with the integer value from the list
if (list->removeFirst(value) == true) {
//output success to the console
cout << "VALUE " << value << " REMOVED" << endl;
} else {
//output failure to the console
cout << "VALUE " << value << " NOT FOUND" << endl;
}
//clear the stringstream
ss.clear();
break;
//if the character is G
case 'G':
//get the integer value that follows the character
ss.str(nextLine.substr(2));
ss >> value;
//attempt to locate a Node with the integer value
if (list->get(value) == true) {
//output success to the console
cout << "VALUE " << value << " FOUND" << endl;
} else {
//output failure to the console
cout << "VALUE " << value << " NOT FOUND" << endl;
}示例2: unittest2
void unittest2 ()
{
cout << "\nSTARTING UNIT TEST\n\n";
DLList list;
try {
evaluate(list.getSize() == 0);
cout << "Passed TEST 1: default constructor (size) \n";
} catch (MyException e) {
cout << "# FAILED TEST 1: default constructor (size) #\n";
}
try {
evaluate(list.toString() == "");
cout << "Passed TEST 2: toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 2: toString #\n";
}
list.insert(10);
try {
evaluate(list.getSize() == 1 && list.toString() == "10");
cout << "Passed TEST 3: insert(10)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 3: insert(10)/getSize/toString #\n";
}
list.insert(50);
try {
evaluate(list.getSize() == 2 && list.toString() == "10,50");
cout << "Passed TEST 4: insert(50)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 4: insert(50)/getSize/toString #\n";
}
list.insert(30);
try {
evaluate(list.getSize() == 3 && list.toString() == "10,30,50");
cout << "Passed TEST 5: insert(30)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 5: insert(30)/getSize/toString #\n";
}
list.insert(5);
try {
evaluate(list.getSize() == 4 && list.toString() == "5,10,30,50");
cout << "Passed TEST 6: insert(5)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 6: insert(5)/getSize/toString #\n";
}
list.insert(55);
try {
evaluate(list.getSize() == 5 && list.toString() == "5,10,30,50,55");
cout << "Passed TEST 7: insert(55)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 7: insert(55)/getSize/toString #\n";
}
list.insert(20);
try {
evaluate(list.getSize() == 6 && list.toString() == "5,10,20,30,50,55");
cout << "Passed TEST 8: insert(20)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 8: insert(20)/getSize/toString #\n";
}
list.insert(40);
try {
evaluate(list.getSize() == 7 && list.toString() == "5,10,20,30,40,50,55");
cout << "Passed TEST 9: insert(40)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 9: insert(40)/getSize/toString #\n";
}
list.insert(30);
try {
evaluate(list.getSize() == 8 && list.toString() == "5,10,20,30,30,40,50,55");
cout << "Passed TEST 10: insert(30)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 10: insert(30)/getSize/toString #\n";
}
list.insert(5);
try {
evaluate(list.getSize() == 9 && list.toString() == "5,5,10,20,30,30,40,50,55");
cout << "Passed TEST 11: insert(5)/getSize/toString \n";
} catch (MyException e) {
cout << "# FAILED TEST 11: insert(5)/getSize/toString #\n";
}
try {
evaluate(list.removeFirst(1) == false);
cout << "Passed TEST 12: removeFirst(1) \n";
} catch (MyException e) {
cout << "# FAILED TEST 12: removeFirst(1) #\n";
}
try {
//.........这里部分代码省略.........
示例3: main
//.........这里部分代码省略.........
cout << "VALUE " << intList->getFront() << " AT HEAD" << endl;
}
catch (string e){
cout << e << endl;
}
}
else if(operation == 'Z'){
try{
cout << "VALUE " << intList->getBack() << " AT TAIL" << endl;
}
catch (string e){
cout << e << endl;
}
}
else if(operation == 'T'){
if(intList->getSize() > 0){
intList->popFront();
cout << "REMOVED HEAD" << endl;
}
else{
cout << "LIST EMPTY" << endl;
}
}
else if(operation == 'K'){
if(intList->getSize() > 0){
intList->popBack();
cout << "REMOVED TAIL" << endl;
}
else{
cout << "LIST EMPTY" << endl;
}
}
else if(operation == 'N'){
cout << "LIST SIZE IS " << intList->getSize() << endl;
}
else if(operation == 'P'){
if(intList->getSize() > 0){
cout << *intList << endl;
}
else{
cout << "LIST EMPTY" << endl;
}
}
else{
string str = line.substr(2);
stringstream ss(str);
int value = 0;
ss >> value;
if(operation == 'I'){
cout << "VALUE " << value << " INSERTED" << endl;
intList->insert(value);
}
else if(operation == 'F'){
cout << "VALUE " << value << " ADDED TO HEAD" << endl;
intList->pushFront(value);
}
else if(operation == 'B'){
cout << "VALUE " << value << " ADDED TO TAIL" << endl;
intList->pushBack(value);
}
else if(operation == 'E'){
if(intList->removeAll(value)){
cout << "VALUE " << value << " ELIMINATED" << endl;
}
else{
cout << "VALUE " << value << " NOT FOUND" << endl;
}
}
else if(operation == 'R'){
if(intList->removeFirst(value)){
cout << "VALUE " << value << " REMOVED" << endl;
}
else{
cout << "VALUE " << value << " NOT FOUND" << endl;
}
}
else if(operation == 'G'){
if(intList->get(value)){
cout << "VALUE " << value << " FOUND" << endl;
}
else{
cout << "VALUE " << value << " NOT FOUND" << endl;
}
}
}
}
}
}
if(intList != NULL){
delete intList;
intList = NULL;
}
fileIn.close();
}
return 0;
}示例4: processFile
//.........这里部分代码省略.........
ss.str(nextline.substr(2));
ss >> value;
list->pushFront(value);
cout << "VALUE " << value << " ADDED TO HEAD" << endl;
}
break;
case 'B':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
ss.str(nextline.substr(2));
ss >> value;
list->pushBack(value);
cout << "VALUE " << value << " ADDED TO TAIL" << endl;
}
break;
case 'A':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
try {
cout << "VALUE " << list->getFront() << " AT HEAD" << endl;
} catch (string e) {
cout << e << endl;
}
}
break;
case 'Z':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
try {
cout << "VALUE " << list->getBack() << " AT TAIL" << endl;
} catch (string e) {
cout << e << endl;
}
}
break;
case 'K':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else if (list->getSize() > 0) {
list->popBack();
cout << "REMOVED TAIL" << endl;
} else {
cout << "LIST EMPTY" << endl;
}
break;
case 'E':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
ss.str(nextline.substr(2));
ss >> value;
if (list->removeAll(value) == true) {
cout << "VALUE " << value << " ELIMINATED" << endl;
} else {
cout << "VALUE " << value << " NOT FOUND" << endl;
}
}
break;
case 'R':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
ss.str(nextline.substr(2));
ss >> value;
if (list->removeFirst(value) == true) {
cout << "VALUE " << value << " REMOVED" << endl;
} else {
cout << "VALUE " << value << " NOT FOUND" << endl;
}
}
break;
case 'G':
ss.str(nextline.substr(2));
ss >> value;
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else if (list->get(value) == true) {
cout << "VALUE " << value << " FOUND" << endl;
} else {
cout << "VALUE " << value << " NOT FOUND" << endl;
}
break;
case 'N':
if (list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
} else {
cout << "LIST SIZE IS " << list->getSize() << endl;
}
break;
default:
break;
}
}
inputstream.close();
}
}示例5: run_project3
//.........这里部分代码省略.........
try{
btassert<bool>(list->getSize() != 0);
cout << "VALUE " << list->getFront() << " AT HEAD" << endl;
}
catch (bool b){
cout << "LIST EMPTY" << endl;
}
}
//get the last element in the list if there is list.
if(charLetter == "Z" && doesListExist == true){
try{
btassert<bool>(list->getSize() != 0);
cout << "VALUE " << list->getBack() << " AT TAIL" << endl;
}
catch (bool b){
cout << "LIST EMPTY" << endl;
}
}
//remove element from front of the list if there is a list.
if(charLetter == "T" && doesListExist == true){
if(list->getSize() == 0){
cout << "LIST EMPTY" << endl;
}
else{
list->popFront();
cout << "REMOVED HEAD" << endl;
}
}
//remove element from back of the list if there is a list.
if(charLetter == "K" && doesListExist == true){
if(list->getSize() == 0){
cout << "LIST EMPTY" << endl;
}
else{
list->popBack();
cout << "REMOVED TAIL" << endl;
}
}
//get an element from the list if there is a list.
if(charLetter == "G" && doesListExist == true){
if(list->get(newNumber) == true){
cout << "VALUE " << newNumber << " FOUND" << endl;
}
else{
cout << "VALUE " << newNumber << " NOT FOUND" << endl;
}
}
//eliminate all the same element, the element to be eliminate will be newNumber.
if(charLetter == "E" && doesListExist == true){
if(list->removeAll(newNumber) == true){
cout <<"VALUE " << newNumber << " ELIMINATED" << endl;
}
else{
cout << "VALUE " << newNumber << " NOT FOUND" << endl;
}
}
//remove an element from the list, the element to be remove will be newNumber.
if(charLetter == "R" && doesListExist == true){
if(list->removeFirst(newNumber) == true){
cout << "VALUE " << newNumber << " REMOVED" << endl;
}
else{
cout << "VALUE " << newNumber << " NOT FOUND" << endl;
}
}
//show number of element in the list.
if(charLetter == "N" && doesListExist == true){
cout << "LIST SIZE IS " << list->getSize() << endl;
}
//print the element(s) in the list.
if(charLetter == "P" && doesListExist == true){
if(list->getSize() == 0){
cout << "LIST EMPTY" << endl;
}
else{
cout << *list << endl;
}
}
//display message if there is no list for an operation.
if(doesListExist == false && charLetter != "#" && line != ""){
cout << "MUST CREATE LIST INSTANCE" << endl;
}
}
myfile.close();
//delete the list if there is a list before exiting. NULL list pointer.
if(doesListExist == true){
delete list;
list = NULL;
}
}示例6: main
//.........这里部分代码省略.........
case 'D':
delete list;
list = NULL;
cout << "LIST DELETED" << endl;
break;
case 'I':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
cout << "VALUE " << intValue << " INSERTED" << endl;
list->insert(intValue);
break;
case 'F':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
cout << "VALUE " << intValue << " ADDED TO HEAD" << endl;
list->pushFront(intValue);
break;
case 'B':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
cout << "VALUE " << intValue << " ADDED TO TAIL" << endl;
list->pushBack(intValue);
break;
case 'A':
cout << "VALUE " << list->getFront() << " AT HEAD" << endl;
break;
case 'Z':
cout << "VALUE " << list->getBack() << " AT TAIL" << endl;
break;
case 'T':
list->popFront();
cout << "REMOVED HEAD" << endl;
break;
case 'K':
list->popBack();
cout << "REMOVED TAIL" << endl;
break;
case 'E':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
if (list->removeAll(intValue))
cout << "VALUE " << intValue << " ELIMINATED" << endl;
else
cout << "VALUE " << intValue << " NOT FOUND" << endl;
break;
case 'G':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
if (list->get(intValue))
cout << "VALUE " << intValue << " FOUND" << endl;
else
cout << "VALUE " << intValue << " NOT FOUND" << endl;
break;
case 'P':
cout << list->toString() << endl;
break;
case 'N':
cout << "LIST SIZE IS " << list->getSize() << endl;
break;
case 'R':
strValue = currentLine.substr(2);
ss << strValue;
ss >> intValue;
if (list->removeFirst(intValue))
cout << "VALUE " << intValue << " REMOVED" << endl;
else
cout << "VALUE " << intValue << " NOT FOUND" << endl;
break;
default:
cout << "UNKNOWN COMMAND" << endl;
break;
}
}
}
theFile.close();
}
return 0;
}示例7: processFile
//.........这里部分代码省略.........
cout << "LIST CLEARED" << endl;
}
break;
case 'D':
//if there is a list deleted it
if(list!= NULL) {
delete list;
cout << "LIST DELETED" << endl;
}//if there isn't show warning
else
cout << "MUST CREAT LIST INSTANCE" << endl;
break;
case 'I':
if(list == NULL) {
cout << "MUST CREAT LIST INSTANCE" << endl;
}
else {
ss.str(nextline.substr(2));//gets the next whole value after the first value on a line
ss >> value;//puts the from input into an int
list->insert(value);//inserts the value into a node on the list
cout << "VALUE " << value << " INSERTED" << endl;
ss.clear();
ss.str("");
}
break;
case 'F':
ss.str(nextline.substr(2));
ss >> value;
list->insertHead(value);//inserts the value from input into the first node
cout << "VALUE " << value << " ADDED TO HEAD" << endl;
ss.clear();
ss.str("");
break;
case 'B':
ss.str(nextline.substr(2));
ss >> value;
list->insertTail(value);
cout << "VALUE " << value << " ADDED TO TAIL" << endl;
ss.clear();
ss.str("");
break;
case 'A':
if(list == NULL) {
cout << "VALUE NULL AT HEAD" << endl;
}
else {
list->getHead();
cout << "VALUE " << list->getHead() << " AT HEAD" << endl;
}
break;
case 'Z':
list->getTail();
cout << "VALUE " << list->getTail() << " AT TAIL" << endl;
break;
case 'T':
if(list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
}
else if (list->getSize() > 0) {
list->removeHead();
cout << "REMOVED HEAD" << endl;
}
else {
cout << "LIST EMPTY" << endl;
}
break;
case 'K':
if(list == NULL) {
cout << "MUST CREATE LIST INSTANCE" << endl;
}
else if(list->getSize() > 0) {
list->removeTail();
cout << "REMOVED TAIL" << endl;
}
else
cout << "LIST EMPTY" << endl;
break;
case 'E':
ss.str(nextline.substr(2));
ss >> value;
list->removeFirst(value);
cout << "VALUE " << value << " ELIMINATED" << endl;
ss.clear();
ss.str("");
break;
case 'R':
break;
case 'G':
break;
case 'N':
break;
case 'P':
list->toString();
break;
}
}
cout << "INPUT FINISHED" << endl;
fin.close();
}