Type of Triangle
- URL : https://www.hackerrank.com/challenges/what-type-of-triangle/problem
- 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 3 sides of equal length.
- Isosceles: It’s a triangle with 2 sides of equal length.
- Scalene: It’s a triangle with 3 sides of differing lengths.
- Not A Triangle: The given values of A, B, and C don’t form a triangle.
- MySQL, Oracle Solution
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select
case
when a + b <= c or a + c <= b or b + c <= A then 'Not A Triangle'
when a = b and a = c then 'Equilateral'
when a = b or a = c or b = c then 'Isosceles'
else 'Scalene'
end
from triangles;