[HackerRank] Type of Triangle 오라클(Oracle)

@notepad_jj2

츄르사려고 코딩하는집사입니다.

---

1. [HackerRank] Type of Triangle 오라클(Oracle)

 

2. 문제 출처

https://www.hackerrank.com/challenges/what-type-of-triangle/problem

Type of Triangle | HackerRank

 

3. 문제

Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Output one of the following statements for each record in the table:

• Equilateral: It's a triangle with  sides of equal length.
• Isosceles: It's a triangle with  sides of equal length.
• Scalene: It's a triangle with  sides of differing lengths.
• Not A Triangle: The given values of A, B, and C don't form a triangle.Input FormatExplanation
• Values in the tuple  form an Isosceles triangle, because .
  Values in the tuple  form an Equilateral triangle, because . Values in the tuple  form a Scalene triangle, because .
  Values in the tuple  cannot form a triangle because the combined value of sides  and  is not larger than that of side .
• Sample Output
• Isosceles Equilateral Scalene Not A Triangle
• The TRIANGLES table is described as follows:Each row in the table denotes the lengths of each of a triangle's three sides.
• 
• Sample Input
• 

 

4. 풀이

- 

 

5. 소스 코드

 

SELECT
    CASE WHEN A+B <= C OR A+C <= C OR B+C <= A THEN 'Not A Triangle'
    ELSE CASE WHEN A=B and B=C and A=C then 'Equilateral'
    ELSE CASE WHEN A=B or B=C or A=C then 'Isosceles'
    ELSE 'Scalene'
    END END END
FROM Triangles;

 

---