L1-027 出租 L2-014 列车调度 set二分

https://pintia.cn/problem-sets/994805046380707840/problems/994805107638517760

#include
using namespace std;
typedef long long ll;
#define IO ios::sync_with_stdio(false);cin.tie(0);
const int maxn=2e5+5;
const int INF = 0x3f3f3f3f;
ll n,vis[10],cnt,c,a[10];
char s[12];

int main(){
	
	scanf("%s",s);
	for(int i=0;i<11;i++){
		vis[s[i]-'0']++;
	}
	printf("int[] arr = new int[]{");
	for(int i=9;i>=0;i--){
		if(vis[i]){
			a[cnt]=i;
			cnt++;
		}
	}
	
	for(int i=0;i<cnt;i++){
		cout<<a[i];
		if(i!=cnt-1)
			printf(",");
		
	}
	printf("};\n");
	printf("int[] index = new int[]{");
	for(int i=0;i<11;i++){
		for(int j=0;j<cnt;j++){
			if(a[j]==(s[i]-'0')){
				printf("%d",j);break;
			}
		}
		if(i!=10)
			printf(",");
	}
	printf("};\n");
	return 0;
}

优先队列+map

#include
using namespace std;
typedef long long ll;
#define IO ios::sync_with_stdio(false);cin.tie(0);
const int maxn=2e5+5;
const int INF = 0x3f3f3f3f;
ll n,vis[10],cnt,c;
char s[12];
priority_queue<ll,vector<ll>,less<ll> > q;
map<ll,ll> mp;
int main(){
	cin>>s;
	for(int i=0;i<11;i++){
		if(!vis[s[i]-'0']){
			cnt++;
			q.push(s[i]-'0');
		}
			
		vis[s[i]-'0']++;
	}
	printf("int[] arr = new int[]{");
	while(!q.empty()){
		c++;
		cout<<q.top();
		mp[q.top()]=c-1;
		q.pop();
		if(c!=cnt)
			cout<<","; 
		else
			cout<<"};"<<endl;
	}
	
	printf("int[] index = new int[]{");
	for(int i=0;i<11;i++){
		cout<<mp[s[i]-'0'];
		if(i!=10)
			cout<<",";
		else
			cout<<"};"<<endl;
	}
	return 0;
}

L2-014
递减排列的放在一个调度队列中

https://www.cnblogs.com/zengguoqiang/p/8677456.html

#include
using namespace std;
typedef long long ll;
#define IO ios::sync_with_stdio(false);cin.tie(0);
const int maxn=2e5+5;
const int INF = 0x3f3f3f3f;
ll n,temp;
set<ll> s;
set<ll>::iterator it;
int main(){
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>temp;
		if(s.upper_bound(temp)!=s.end()){
			it=s.upper_bound(temp);
			s.erase(it);
		}
		s.insert(temp);//不是递减则递增的添加 始终代替同一个调度路上的比它大的递减的元素 
	}
	cout<<s.size()<<endl;
	return 0;
}