Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who achieved full scores for more than one challenge. Order your output in descending order by the total number of challenges in which the hacker earned a full score. If more than one hacker received full scores in same number of challenges, then sort them by ascending hacker_id.
Input Format
The following tables contain contest data:
Hackers: The hacker_id is the id of the hacker, and name is the name of the hacker.
https://s3.amazonaws.com/hr-challenge-images/19504/1458526776-67667350b4-ScreenShot2016-03-21at7.45.59AM.png
Difficulty: The difficult_level is the level of difficulty of the challenge, and score is the score of the challenge for the difficulty level.
https://s3.amazonaws.com/hr-challenge-images/19504/1458526915-57eb75d9a2-ScreenShot2016-03-21at7.46.09AM.png
Challenges: The challenge_id is the id of the challenge, the hacker_id is the id of the hacker who created the challenge, and difficulty_level is the level of difficulty of the challenge.
https://s3.amazonaws.com/hr-challenge-images/19504/1458527032-f9ca650442-ScreenShot2016-03-21at7.46.17AM.png
Submissions: The submission_id is the id of the submission, hacker_id is the id of the hacker who made the submission, challenge_id is the id of the challenge that the submission belongs to, and score is the score of the submission.
https://s3.amazonaws.com/hr-challenge-images/19504/1458527077-298f8e922a-ScreenShot2016-03-21at7.46.29AM.png
Sample Input
Hackers Table:Difficulty Table:
https://s3.amazonaws.com/hr-challenge-images/19504/1458527265-7ad6852a13-ScreenShot2016-03-21at7.46.50AM.png
Challenges Table:
https://s3.amazonaws.com/hr-challenge-images/19504/1458527285-01e95eb6ec-ScreenShot2016-03-21at7.46.40AM.png
Submissions Table:
https://s3.amazonaws.com/hr-challenge-images/19504/1458527241-6922b4ad87-ScreenShot2016-03-21at7.47.02AM.png
Sample Output
90411 Joe
Explanation
Hacker 86870 got a score of 30 for challenge 71055 with a difficulty level of 2, so 86870 earned a full score for this challenge.
Hacker 90411 got a score of 30 for challenge 71055 with a difficulty level of 2, so 90411 earned a full score for this challenge.
Hacker 90411 got a score of 100 for challenge 66730 with a difficulty level of 6, so 90411 earned a full score for this challenge.
Only hacker 90411 managed to earn a full score for more than one challenge, so we print the their hacker_id and name as space-separated values.
solution sql query
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select h.hacker_id,h.name
from hackers h,
challenges c ,
difficulty d,
submissions s
where h.hacker_id=s.hacker_id
and c.challenge_id=s.challenge_id
and c.difficulty_level=d.difficulty_level
and s.score=d.score
group by h.hacker_id,h.name
having count(h.hacker_id)>1
order by count(c.challenge_id) desc,h.hacker_id
Q. Output the correct day in capital letters.
Sample Input
08 05 2015
Sample Output
WEDNESDAY
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import java.time.LocalDate;
class Result {
/*
* Complete the 'findDay' function below.
*
* The function is expected to return a STRING.
* The function accepts following parameters:
* 1. INTEGER month
* 2. INTEGER day
* 3. INTEGER year
*/
public static String findDay(int month, int day, int year) {
return LocalDate.of(year, month, day).getDayOfWeek().name();
}
}
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sudo rm /var/lib/dpkg/available
sudo touch /var/lib/dpkg/available
sudo sh -c 'for i in /var/lib/apt/lists/*_Packages; do dpkg --merge-avail "$i"; done'
If previous instruction does not solve the problem...
sudo dpkg --configure -a
sudo apt-get -f install
sudo apt-get clean
sudo apt-get update && sudo apt-get upgrade
Installing SQLite 3
First update the apt package repository cache with the following command:
$ sudo apt-get update
The apt package repository cache should be updated.
Now to install SQLite 3, run the following command:
$ sudo apt-get install sqlite3
SQLite 3 should be installed.
Now you can check whether SQLite 3 is working with the following command:
$ sqlite3 --version
Installing SQLite Browser
Run the following command to install SQLite Browser:
$ sudo apt-get install sqlitebrowser
Now press y and then press .
SQLite Browser should be installed.
Using SQLite using SQLite Browser
Now you can go to the Application Menu and search for SQLite Browser. You should see a database icon as marked in the screenshot below. Click on it.
Build program ---> mvn clean install
Run Project ----> mvn clean package
Set properties.yml file
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spring:
profiles:dev
server:
port:8000
---
spring:
profiles:test
server:
port:9000
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Set Environment variable(dev or test) environment using following ncommand:
or How to pass Environment variable to JVM
