https://www.hackerrank.com/challenges/weather-observation-station-9/problem

 

Weather Observation Station 6 | HackerRank

Query a list of CITY names beginning with vowels (a, e, i, o, u).

www.hackerrank.com

Query the list of CITY names from STATION that do not start with vowels. Your result cannot contain duplicates.

Input Format

The STATION table is described as follows:

a,e,i,o,u 로 시작하지 않는 CITY를 찾는 문제 

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https://www.hackerrank.com/challenges/weather-observation-station-8/problem

 

Weather Observation Station 8 | HackerRank

Query CITY names that start AND end with vowels.

www.hackerrank.com

Query the list of CITY names from STATION which have vowels (i.e., a, e, i, o, and u) as both their first and last characters. Your result cannot contain duplicates.

Input Format

The STATION table is described as follows:

 

STATION 테이블에서 a,e,i,o,u로 시작하고 a,e,i,o,u로 끝나는 CITY를 찾는 문제

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https://www.hackerrank.com/challenges/weather-observation-station-7/problem

 

Weather Observation Station 7 | HackerRank

Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION.

www.hackerrank.com

Query the list of CITY names ending with vowels (a, e, i, o, u) from STATION. Your result cannot contain duplicates.

Input Format

The STATION table is described as follows:

a,e,i,o,u 로 끝나는 CITY 중복없이 찾는 문제 

마찬가지로 OR로 조건을 나누거나 정규표현식으로 해결

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https://www.hackerrank.com/challenges/weather-observation-station-6/problem

 

Weather Observation Station 6 | HackerRank

Query a list of CITY names beginning with vowels (a, e, i, o, u).

www.hackerrank.com

Query the list of CITY names starting with vowels (i.e., a, e, i, o, or u) from STATION. Your result cannot contain duplicates.

Input Format

The STATION table is described as follows:

a,e,i,o,u 로 시작하는 CITY를 중복없이 찾는 문제

OR로 조건을 추가하거나 정규표현식으로 해결가능 

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https://www.hackerrank.com/challenges/weather-observation-station-5/problem

 

Weather Observation Station 5 | HackerRank

Write a query to print the shortest and longest length city name along with the length of the city names.

www.hackerrank.com

 

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:

 

CITY 이름중에 가장 짧은 것과 가장 긴 것을 각각 찾고, 길이가 같은 것이 있을 경우 알파벳 순으로 가장 빠른 것을 찾는 문제 

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https://www.hackerrank.com/challenges/weather-observation-station-4/problem

 

Weather Observation Station 4 | HackerRank

Find the number of duplicate CITY names in STATION.

www.hackerrank.com

 

Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table.  The STATION table is described as follows:

 

전체 CITY 수와 겹치지 않는 CITY 수를 빼는 문제

 

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