905. What type
of triangle?
Determine the type of a triangle
(equilateral, isosceles, or scalene) based on the given side lengths.
Input. One line contains 3 integers, representing
the lengths of the triangle’s sides. The side lengths do not exceed 100.
Output. Print 1 if the triangle is
equilateral, 2 if it is isosceles, and 3 if it is scalene.
|
Sample
input |
Sample
output |
|
3 4 3 |
2 |
conditional statement
A triangle is equilateral if all its sides are equal. If it is not equilateral, check if it is isosceles – this requires two sides to be equal. If the triangle is neither equilateral nor
isosceles, then it is scalene.
Algorithm implementation
Read
the input data.
scanf("%d %d %d",&a,&b,&c);
Check if the triangle is equilateral.
if ((a == b) && (b == c))
puts("1");
else
Check if the triangle is isosceles.
if ((a == b ) || (a == c) || (b == c))
puts("2");
else
Otherwise, the triangle is scalene.
puts("3");
Java implementation
import java.util.*;
public class Main
{
public static void main(String[] args)
{
Scanner con = new
Scanner(System.in);
int a = con.nextInt();
int b = con.nextInt();
int c = con.nextInt();
if ((a == b) && (b == c))
System.out.println("1");
else
if ((a == b ) || (a == c) || (b == c))
System.out.println("2");
else
System.out.println("3");
con.close();
}
}
Python implementation
Read
the input data.
a, b, c = map(int, input().split())
Check if the triangle is equilateral.
if a == b and b == c:
print("1")
else:
Check if the triangle is isosceles.
if a == b or a == c or b == c:
print("2")
else:
Otherwise, the triangle is scalene.
print("3")