【P5717 【深基3.习8】三角形分类】【Java】

package myPackage;
import java.util.*;
public class Main {
    
    
	static StringBuilder string=new StringBuilder();
	public static void main(String[] args) {
    
    
		Scanner input=new Scanner(System.in);
		int[] arr=new int[3];
		for(int i=0;i<3;i++) {
    
    
			arr[i]=input.nextInt();
		}
		Arrays.sort(arr);
		if(arr[0]+arr[1]<=arr[2]){
    
    
			string.append("Not triangle\n");
			System.out.println(string);
			return;
		}
		if(arr[0]*arr[0]+arr[1]*arr[1]==arr[2]*arr[2]){
    
    
			string.append("Right triangle\n");
		}
		if(arr[0]*arr[0]+arr[1]*arr[1]>arr[2]*arr[2])  {
    
    
			string.append("Acute triangle\n");		
		}
		if(arr[0]*arr[0]+arr[1]*arr[1]<arr[2]*arr[2]) {
    
    
			string.append("Obtuse triangle\n");
		}
		
		if(arr[0]==arr[1]||arr[2]==arr[1]){
    
    
			string.append("Isosceles triangle\n");
		}
		if(arr[0]==arr[2]) {
    
    
			string.append("Equilateral triangle\n");
		}
		System.out.println(string);
	}
}