HackerRank - Weather Observation Station 5
April - 25/2025Problem:
Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i.e.: number of characters in the name). If there is more than one smallest or largest city, choose the one that comes first when ordered alphabetically.
The STATION table is described as follows:
| Field | Type |
|---|---|
| ID | NUMBER |
| CITY | VARCHAR2(21) |
| STATE | VARCHAR2(2) |
| LAT_N | NUMBER |
| LAT_W | NUMBER |
where LAT_N is the northern latitude and LONG_W is the western longitude.
# Input
- For example, CITY has four entries: DEF, ABC, PQRS and WXY.
# Output
- ABC 3
- PQRS 4
# Solution
SELECT CITY, LEGTH(CITY) FROM STATION ORDER BY LEGTH(CITY), CITY ASC LIMIT 1;
SELECT CITY, LEGTH(CITY) FROM STATION ORDER BY LEGTH(CITY) DESC, CITY ASC LIMIT 1;
# Solution_01
SELECT CITY, LENGTH(CITY) FROM STATION WHERE LENGTH(CITY) = (SELECT MIN(LENGTH(CITY)) FROM STATION) ORDER BY CITY ASC LIMIT 1;
SELECT CITY, LENGTH(CITY) FROM STATION WHERE LENGTH(CITY) = (SELECT MAX(LENGTH(CITY)) FROM STATION) ORDER BY CITY ASC LIMIT 1;