[HackerRank] Weather Observation Station 19 (MySQL)

https://www.hackerrank.com/challenges/weather-observation-station-19/problem?isFullScreen=true 

Weather Observation Station 19 | HackerRank

 

문제

Consider P1(a,c) and P2(b,d) to be two points on a 2D plane where (a,b) are the respective minimum and maximum values of Northern Latitude (LAT_N) and (c,d) are the respective minimum and maximum values of Western Longitude (LONG_W) in STATION.

Query the Euclidean Distance between points P1 and P2 and format your answer to display 4 decimal digits.

Input Format

The STATION table is described as follows:

where LAT_N is the northern latitude and LONG_W is the western longitude.

 

풀이

select round(sqrt(pow(max(lat_n)-min(lat_n),2)+pow(max(long_w)-min(long_w),2)),4)
from station