USGS Earthquake Hazards Program is an organization that analyzes earthquake threats around the world. They expose REST API outlining details of recent earthquakes happening around the world - location, magnitude, etc.
We would like to write a program that for a given city (we will provide lat/lon) will find out 10 most nearby earthquakes (earthquakes that happened in the closest proximity of that city).
Web services for fetching Earthquakes are located here: https://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php
We are interested in all earthquakes that happened during last 30 days: https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_month.geojson
For each earthquake there is a lat/lon location of that earthquake. We would like the program to connect to this web service and pull the earthquake data.
We expect the program to correctly calculate curve distance between two lat/lon points.
Program should accept two numbers on standard input: the latitude and longitude of a city. So for New York the program should be started with numbers:
40.730610
-73.935242
Source: https://www.latlong.net/place/new-york-city-ny-usa-1848.html
As an output, we want the program to list 10 earthquakes that happened in the closest proximity to input point, in the order from the closest to the furthest. For each earthquake we want to print the content of a title field followed by || and distance (rounded to full kilometers).
title || distance
title || distance
title || distance
Note that if two earthquakes happened in the same location (lat/lon) we only want it to appear only once on the list.
We would like the solution to do the following:
- Read two float numbers from standard input that represent the lat/lon of a city
- Read a list of earthquakes that happened during last 30 days
- Calculate distance between given city and each of the earthquakes
- Print the 10 earthquakes with the shortest distance to the given city
- The output list should contain earthquake title and distance in kilometers
- If two earthquakes happened in exactly the same location (they have the same lat/lon) we only want one of them to be printed
- It is ok for a solution to use external libraries
Example Input:
40.730610
-73.935242
Example Output:
M 1.3 - 2km SSE of Contoocook, New Hampshire || 331
M 1.3 - 2km ENE of Belmont, Virginia || 354
M 2.4 - 83km ESE of Nantucket, Massachusetts || 406
M 1.3 - 13km ENE of Barre, Vermont || 410
M 0.7 - 18km NW of Norfolk, New York || 476
M 2.0 - 17km NW of Norfolk, New York || 476
M 1.7 - 19km NNW of Beaupre, Canada || 758
M 1.9 - 13km SW of La Malbaie, Canada || 814
M 2.4 - 16km N of Lenoir, North Carolina || 840
M 2.4 - 12km ESE of Carlisle, Kentucky || 896