vector<int> largestDivisibleSubset(vector<int>& nums) {
/*
first we can sort the nums.
dp[i] is current max length of subset to satisfy requirements.
i indicates index of subset,
dp[i] = max(dp[j] + 1) if (nums[i]%dp[j]==0), 0<=j<i
*/
vector<int> ret;
int len = nums.size();
if(len==0)
return ret;
std::sort(nums.begin(),nums.end());
vector<int> dp(len,0);
vector<int> former(len,0);
int max_len =0; //max len of subset
int index; //max value's index in subset
for(int i=0;i<len;i++){
for(int j=i;j>=0;j--){
//since set is already divisible, if current number can divide max num in current set, it can divide all in that set
if(nums[i]%nums[j]==0 && dp[i]<dp[j]+1){
dp[i] = dp[j]+1;
former[i] = j; //point to former element index in subset
}
}
if(dp[i]>max_len){
max_len = dp[i];
index = i;
}
}
for(int i=0;i<max_len;i++){
ret.insert(ret.begin(),nums[index]);
index = former[index];
}
return ret;
}
void LapTimerThread::sectionChangeSender(QList<double> list)
{
//display
QTime latter(list.at(2),list.at(3),list.at(4),list.at(5));
QTime former(list.at(7),list.at(8),list.at(9),list.at(10));
double dis = former.msecsTo(latter);
QString dev = "";
double scale = list.at(6)/(list.at(6)+list.at(1));
QTime atWaypt = former.addMSecs((int)(scale*dis));
if (list.first()==0)//cross finish line
{
if (list.last()==1)//normally finish a lap
{
current.replace(current.length()-1,qTimeGap(¤tStart,&atWaypt));
dev = QString::number(qTimeGap(&(best.at(list.last())),&(current.at(list.last()))).msecsSinceStartOfDay()/1000)
.append(".").append(qTimeGap(&(best.at(list.last())),&(current.at(list.last()))).toString("zzz"));
dev.prepend((best.last().msecsTo(current.last())>=0)?"+":"-");
QStringList tmpList;
tmpList.append(QString::number((int)list.first()));
tmpList.append(current.last().toString("mm:ss.zzz"));
tmpList.append(best.last().toString("mm:ss.zzz"));
tmpList.append(dev);
tmpList.append("");
emit sectionInfoSender(tmpList);
if ((best.last().msecsTo(current.last())<0)|best.last().isNull())
best.replace(current.length()-1,current.last());
}
else if (list.last()==0)//restart from reset
{
//do something
}
currentStart = former.addMSecs((int)(scale*dis));
qWarning()<<"currentStart: "<<currentStart.toString("hh:mm:ss.zzz");
if (flag)
{
bufferWaypt.writeTextElement("time",current.last().toString("mm:ss.zzz"));
bufferWaypt.writeTextElement("best",best.last().toString("hh:mm:ss.zzz"));
bufferWaypt.writeTextElement("dev",dev);
bufferCoord.writeEndElement();
bufferWaypt.writeEndElement();
bufferSpeed.writeEndElement();
}
bufferCoord.writeStartElement("lap");
bufferCoord.writeAttribute("start",currentStart.toString("hh:mm:ss.zzz"));
bufferWaypt.writeStartElement("lap");
bufferSpeed.writeStartElement("lap");
flag = true;
}
else //cross other section
{
current.replace(list.first()-1,qTimeGap(¤tStart,&atWaypt));
dev = QString::number(qTimeGap(&(best.at(list.first()-1)),&(current.at(list.first()-1))).msecsSinceStartOfDay()/1000)
.append(".").append(qTimeGap(&(best.at(list.first()-1)),&(current.at(list.first()-1))).toString("zzz"));
dev.prepend((best.last().msecsTo(current.last())>=0)?"+":"-");
QStringList tmpList;
tmpList.append(QString::number((int)list.first()));//0 - waypt no
tmpList.append(current.at(list.first()-1).toString("mm:ss.zzz"));// 1 - waypt time
tmpList.append(best.at(list.first()-1).toString("mm:ss.zzz"));//2 - best @ this waypt
tmpList.append(dev);//3 - waypt dev
tmpList.append("");//4 - info
emit sectionInfoSender(tmpList);
if ((best.at(list.first()-1).msecsTo(current.at(list.first()-1))<0) | best.at(list.first()-1).isNull() )
best.replace(list.first()-1,current.at(list.first()-1));
bufferWaypt.writeTextElement("time",current.at(list.first()-1).toString("mm:ss.zzz"));
bufferWaypt.writeTextElement("best",best.at(list.first()-1).toString("hh:mm:ss.zzz"));
bufferWaypt.writeTextElement("dev",dev);
}
}
