链家笔试编程题题解

import java.util.HashSet;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        HashSet<Integer> hSet=new HashSet<>();
        Scanner scanner=new Scanner(System.in);
        int n=scanner.nextInt();
        for(int i=0;i<n;i++)
        {
            int k=scanner.nextInt();
            for(int j=0;j<k;j++)
            {
                int value=scanner.nextInt();
                hSet.add(value);
            }
        }
        System.out.println(hSet.size());

    }

}

	

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scanner=new Scanner(System.in);
        
        int h=2;
        ArrayList<Integer> arrayList=new ArrayList<>();
        arrayList.add(1);
        
        while(h<=100000)
        {
            arrayList.add(h);
            int d=arrayList.size();
            h=arrayList.get(d-1)+arrayList.get(d-2);
            
        }
        
        while(scanner.hasNext())
        {
            int n=scanner.nextInt();
            int ans=0;
            for(int i=0;i<n;i++)
            {
                if(arrayList.get(i)<=n)
                    ans++;
                else
                    break;
            }
                
            System.out.println(n-ans);
        }

    }

}