How should I practice REST API: Country Codes?

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Problem · String

REST API: Country Codes

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Problem statement

Given a country name and a phone number, query the API at https://jsonmock.hackerrank.com/api/countries?name=country to get the country's calling codes. Prepend the calling code to the phone number and return the string. If the data array is empty, return the string '-1'. If there are multiple calling codes, use the one at the highest index. The format of the number should be:

Example:

+1 7653555443

The response is a JSON object with 5 fields. The essential field is data:

data: Either an empty array or an array with a single object that contains the country's record.

In the data array, the country has the following schema:

name: The name of the country (String)

callingCodes: An array of the country's calling codes (String Array)

A number of fields that are not of interest.

page, per_page, total, total_pages, etc. are not required for this task.

If the country is found, the data array contains exactly 1 element. If not, it is empty and the function should return '-1'.

Function

getPhoneNumbers(country: String, phoneNumber: String) → String

Complete the getPhoneNumbers function in the editor.

getPhoneNumbers has the following parameters:

string country: the country to query
string phoneNumber: the phone number

Returns

string: the completed phone number or -1

Examples

Example 1

country = "Afghanistan"phoneNumber = "6564454455"return = "+93 6564454455"

A call is made to API https://jsonmock.hackerrank.com/api/countries?name=Afghanistan. The calling codes array contains 1 entry, '93'.

Example 2

country = "Puerto Rico"phoneNumber = "564539386"return = "+1939 564539386"

A call is made to the API to fetch the record for Puerto Rico. The returned callingCodes = ['1787', '1939']. Use the higher index code, callingCodes[1].

Example 3

country = "Oceania"phoneNumber = "987574876"return = "-1"

The API call return has an empty data array.

Constraints

The returned JSON object contains either 0 or 1 record in data.

he country name may contain uppercase and lowercase English letters and <space> (ascii 32)