总览
黑马程序员
比赛规则:
共有 12 个人参加比赛,10名评委对其打分,去掉一个最高分,去掉一个最低分,求平均分
共比赛两轮,
第一轮比赛分成两组,取每组的前三名
第二轮六个人取前三名获奖
系统功能:
- 开始比赛
- 展示历史数据
- 清空比赛
- 退出系统
演讲者的类 包含演讲者的姓名,演讲者的两轮分数
class Speaker {
public:
string m_Name; // 姓名
double m_Score[2]; // 分数 最多有两轮得分
};
前期工作:
开始比赛
// 存放的成员属性
// 第一轮选手编号容器
vector<int> v1;
// 第二轮选手编号容器
vector<int> v2;
// 前三名选手编号容器
vector<int> vVictory;
// 存放编号对应的选手
map<int, Speaker>m_Speaker;
// 记录轮数
int m_Index;
// 判断文件是否为空
bool fileIsEmpty;
// 存放往届记录的容器
map<int, vector<string>>m_Record;
// 构造函数
speechManager::speechManager() {
this->initSpeech(); // 初始化
this->createSpeaker(); // 创建参赛选手
this->loadRecord(); // 装载记录
}
initSpeech()函数,初始化函数,把那些容器都置空
void speechManager::initSpeech() {
// 容器都置空
this->v1.clear();
this->v2.clear();
this->vVictory.clear();
this->m_Speaker.clear();
// 轮数为1
this->m_Index = 1;
}
重头戏
// 开始比赛
void speechManager::startSpeech() {
//第一轮比赛
//1.抽签
this->speechDraw();
//2.比赛
this->speechContest();
//3.显示晋级结果
this->showScore();
// 第二轮比赛
this->m_Index++;
// 抽签
this->speechDraw();
// 比赛
this->speechContest();
// 显示最终结果
this->showScore();
// 保存分数
this->saveRecord();
// 重置比赛
this->initSpeech();
this->createSpeaker();
this->loadRecord();
cout << "本届比赛结束" << endl;
system("pause");
system("cls");
}
抽签函数 speechDraw(),第一轮第二轮都需要抽签决定顺序,写一个就成,这里打乱顺序用的vector容器的 random_shuffle
void speechManager::speechDraw() {
cout << "第 << " << this->m_Index << " >> 轮选手正在抽签" << endl;
cout << "---------------------------" << endl;
cout << "抽签后的演讲顺序如下:" << endl;
if (this->m_Index == 1) {
// 第一轮比赛
random_shuffle(this->v1.begin(),this->v1.end());
for_each(this->v1.begin(), this->v1.end(), printDraw);
cout << endl;
}
else
{
//第二轮比赛
random_shuffle(this->v2.begin(), this->v2.end());
for_each(this->v2.begin(), this->v2.end(), printDraw);
cout << endl;
}
system("pause");
}
开始比赛speechContest()
使用临时容器multimap<double,int,greater> groupScore 存放小组成绩
double:成绩 int: 是编号
v_Src:判断第几轮 所放的容器不一样
num 用来记录人员个数
deque 用来存放十个专家给一名选手打的十个分数 去掉最高 去掉最低 求平均存入选手成绩(m_speaker)中,同时存入临时容器当中,以供打出选手成绩
void speechManager::speechContest() {
cout << "------------第 <<" << this->m_Index << ">> 轮比赛正式打响-----------" << endl;
// 临时容器,存放小组成绩
multimap<double, int, greater<double>> groupScore;
// 记录人员个数
int num = 0;
vector<int>v_Src;
if (this->m_Index == 1) {
v_Src = this->v1;
}
else
{
v_Src = this->v2;
}
// 遍历所有的参赛选手
for (vector<int>::iterator it = v_Src.begin(); it != v_Src.end(); it++) {
num++;
// 评委打分
deque<double> d;
for (int i = 0; i < 10; i++) {
double score = (rand() % 401 + 600) / 10.f; // 600-1000
// cout << score << " ";
d.push_back(score);
}
// cout << endl;
// 排序
sort(d.begin(),d.end(),greater<double>());
d.pop_front(); // 去除最高分
d.pop_back(); // 去除最低分
double sum = accumulate(d.begin(),d.end(),0.0f); // 总分
double ave = sum / (double)d.size(); // 平均分
// 打印平均分
// cout << "编号:"<< *it <<" 姓名:" << this->m_Speaker[*it].m_Name << " 平均分:" << ave;
// 将平均分放入到map容器里面
this->m_Speaker[*it].m_Score[m_Index - 1] = ave;
// 将打分的数据,存入临时容器
groupScore.insert(make_pair(ave,*it)); // key是得分 value 是选手的编号
// 每六个人取出前三名
if (num % 6 == 0) {
cout << "第 " << num / 6 << " 小组的比赛名次如下:" << endl;
for (multimap<double, int, greater<double>>::iterator it = groupScore.begin();it != groupScore.end(); it++) {
cout << "编号:" << it->second << " 姓名:" << this->m_Speaker[it->second].m_Name <<
"分数:" << this->m_Speaker[it->second].m_Score[this->m_Index - 1] << endl ;
}
int count = 0;
for (multimap<double, int, greater<double>>::iterator it = groupScore.begin(); it != groupScore.end() && count < 3; it++, count++)
{
if (this->m_Index == 1)
{
v2.push_back(it->second);
}
else
{
vVictory.push_back(it->second);
}
}
groupScore.clear();
cout << endl;
}
}
cout << "----------------第"<< this->m_Index << "轮比赛完毕---------------" << endl;
system("pause");
}
显示晋级信息
void speechManager::showScore() {
cout << "第" << this->m_Index << "轮晋级结果为:" << endl;
vector<int> v;
if (this->m_Index == 1) {
v = this->v2;
}
else {
v = this->vVictory;
}
for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
{
cout << "编号: " << *it << " 姓名:" << this->m_Speaker[*it].m_Name << " 分数: " << this->m_Speaker[*it].m_Score[this->m_Index - 1] << endl;
}
cout << endl;
system("pause");
system("cls");
}
存入文件当中
void speechManager::saveRecord() {
ofstream ofs;
ofs.open("speech.csv",ios::out | ios::app); // 用追加的方式写文件
// 将数据写入文件中
for (vector<int>::iterator it = vVictory.begin(); it != vVictory.end(); it++) {
ofs << *it << "," << this->m_Speaker[*it].m_Score[1] << ",";
}
ofs << endl;
// 关闭文件
ofs.close();
cout << "记录完毕" << endl;
this->fileIsEmpty = false;
}
读取文件
void speechManager::loadRecord()
{
ifstream ifs("speech.csv", ios::in); // 读文件
if(!ifs.is_open())
{
this->fileIsEmpty = true;
cout << "文件不存在" << endl;
ifs.close();
return;
}
// 文件清空情况
char ch;
ifs >> ch;
if (ifs.eof()) {
cout << "文件为空" << endl;
this->fileIsEmpty = true;
ifs.close();
return;
}
// 文件不为空的情况
this->fileIsEmpty = false;
ifs.putback(ch); // 将上面读取的单个字符放回去
string data;
int index = 0;
while (ifs >> data)
{
vector<string>v;
// 10010,86.4375,10006,83.675,10004,82.975,
//cout << data << endl;
int pos = -1; // 查找,的位置
int start = 0;
while(true)
{
pos = data.find(",", start);
if (pos == -1)
{
break;
}
string temp = data.substr(start, pos - start);
// cout << temp << endl;
v.push_back(temp);
start = pos + 1;
}
this->m_Record.insert(make_pair(index,v));
index++;
}
ifs.close();
}
void speechManager::showRecord() {
if (this->fileIsEmpty) {
cout << "文件为空或者不存在" << endl;
}
else
{
for (int i = 0; i < this->m_Record.size(); i++)
{
cout << "第 " << i + 1 << " 届 "
<< "冠军编号:" << this->m_Record[i][0] << "得分: " << this->m_Record[i][1] << " "
<< "亚军编号:" << this->m_Record[i][2] << "得分: " << this->m_Record[i][3] << " "
<< "季军编号:" << this->m_Record[i][4] << "得分: " << this->m_Record[i][5] << " "
<< endl;
}
system("pause");
system("cls");
}
}
清空函数
void speechManager::clearRecord() {
cout << "是否确定清空文件?" << endl;
cout << "1.确定" << endl;
cout << "2.返回" << endl;
int select = 0;
cin >> select;
if (select == 1) {
// 确认清空
ofstream ofs("speech.csv",ios::trunc);
ofs.close();
this->initSpeech();
this->createSpeaker();
this->loadRecord();
cout << "success" << endl;
}
system("pause");
system("cls");
}