Rest API (Intermediate)

#1 REST API: Number of Drawn Matches

In this challenge, the REST API contains information about football matches. The provided API allows querying matches by teams and year. The task is to get the number of matches for a given year that ended in a draw. A match is drawn when both teams scored the same number of goals.

To access a collection of matches played in a given year, perform an HTTP GET request to https://jsonmock.hackerrank.com/api/football_matches?year=<year>&page=<page> where <year> is the year of the competition and <page> is the page of the results to request. The results might be divided into several pages. Pages are numbered from 1.

For example, a GET request to https://jsonmock.hackerrank.com/api/football_matches?year=2011&page=2 returns data associated with matches in the year 2011 on the second page of the results.

The response to such a request is a JSON with the following 5 fields:

  • page: The current page of the results.

  • per_page: The maximum number of matches returned per page.

  • total: The total number of matches on all pages of the results.

  • total_pages: The total number of pages with results.

  • data: An array of objects containing matches information on the requested page.

Each match record has several fields:

  • competition: a string denoting the name of the competition

  • year: an integer denoting the year when the match took place

  • round: a string denoting the round the match belongs to (can be an empty string)

  • team1: a string denoting the name of the first team in the match

  • team2: a string denoting the name of the second team in the match

  • team1goals: a string denoting the number of goals scored by team1 in the match

  • team2goals: a string denoting the number of goals scored by team2 in the match

Notice that the number of pages might be in hundreds, and it would take too much time to fetch the results from all of them and examine the scores of every match. In order to overcome this issue, you are allowed to add an exact value of any of the match object fields to the URL query string in order to limit the number of results. This capability, if used correctly, can help you avoid examining individual match objects.

For example, performing a request to https://jsonmock.hackerrank.com/api/football_matches?year=2011&team1goals=1&page=2 returns data associated with matches in the year 2011, where the first team scored 1 goal, on the second page of the results.

Function Description Complete the function getNumDraws in the editor below.

getNumDraws has the following parameter: int year: the year of the competition

The function must return an integer denoting the number of matches in the given year that ended up in a draw.

Constraints:

  • You can safely assume that no team ever scored more than 10 goals.

Sample Case 0

Input
Output

2011

516

Explanation The year is 2011. There were 516 games in the year 2011 that ended in a draw, so that is the returned answer.

#2 REST API: Football Competition Winner's Goals

In this challenge, the REST API contains information about football competitions and matches. The provided API allows querying competitions by name and year, and it also allows querying matches by competition and year. The task, for a given competition name and year, is to get the total number of goals scored by the team who won the competition.

To access a competition, perform an HTTP GET request to https://jsonmock.hackerrank.com/api/football_competitions?name=<name>&year=<year> where <name> is the name of the competition and <year> is the year of the competition.

For example, a GET request to https://jsonmock.hackerrank.com/api/football_competitions?name=English Premier League&year=2014 returns data associated with the English Premier League in the year 2014.

The response to such a request is a JSON object that contains the property data, which is an array of competitions. In this case, the array will contain only a single item. The item has the following 5 fields:

  • name: a string denoting the name of the competition

  • country: a string denoting the name of the country of the competition

  • year: an integer denoting the year of the competition

  • winner: a string denoting the team that won the competition

  • runnerup: a string denoting the team that was the runner-up in the competition

Below is an example of such a JSON object:

{
  "name": "English Premier League",
  "country": "England",
  "year": 2014,
  "winner": "Chelsea",
  "runnerup": "Manchester City"
}

Next, to access a collection of matches played by a given team in a given competition and year, perform GET requests to https://jsonmock.hackerrank.com/api/football_matches?competition=<competition>&year=<year>&team1=<team>&page=<page> https://jsonmock.hackerrank.com/api/football_matches?competition=<competition>&year=<year>&team2=<team>&page=<page>

Here, <competition> is the name of the competition, <year> is the year of the competition, <team> is the name of the team, and <page> is the page of the results to request. The results might be divided into several pages. Pages are numbered from 1.

Notice that the above two URLs are different. The first URL specifies the team1 parameter (denoting the home team) while the second URL specifies the team2 parameter (denoting the visiting team). Thus, in order to get all the matches a particular team played in, you need to retrieve matches where the team was the home team and the visiting team.

For example, a GET request to https://jsonmock.hackerrank.com/api/football_matches?competition=UEFA%20Champions%20League&year=2011&team1=Barcelona&page=2 returns data associated with matches in the UEFA Champions League in the year 2011, where team1 (the home team) was Barcelona, on the second page of the results.

Similarly, a GET request to https://jsonmock.hackerrank.com/api/football_matches?competition=UEFA%20Champions%20League&year=2011&team2=Barcelona&page=1 returns data associated with matches in the UEFA Champions League in the year 2011, where team2 (the visiting team) was Barcelona, on the first page of the results.

The response to such a request is a JSON with the following 5 fields:

  • page: The current page of the results.

  • per_page: The maximum number of matches returned per page.

  • total: The total number of matches on all pages of the results.

  • total_pages: The total number of pages with results.

  • data: An array of objects containing matches information on the requested page

Each match record has several fields, but in this task only the following 4 are relevant:

  • team1: a string denoting the name of the first team in the match

  • team2: a string denoting the name of the second team in the match

  • team1goals: a string denoting the number of goals scored by team1 in the match

  • team2goals: a string denoting the number of goals scored by team2 in the match

Function Description Complete the function getWinnerTotalGoals in the editor below.

getWinnerTotalGoals has the following parameters: string competition: the name of the competition int year: the year of the competition

The function must return an integer denoting the total number of goals scored in all matches in the given competition by the team who won the competition.

Sample Case 0

Input
Output

UEFA Champions League 2011

28

Explanation The competition is UEFA Champions League and the year is 2011. One of the API endpoints can be used to determine that team Chelsea won this competition. Then, another endpoint can be used to find out that the total number of goals scored by Chelsea during this competition is 28, which is the required answer.

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