package y2016.d03;

import java.io.File;

import java.util.*;

public class Part2 {

private static class Triangle {

private int shortest;

private int middle;

private int longest;

public Triangle(int[] sides) {

this.assignValuesSorted(sides);

}

public Triangle(String[] sides) {

int[] newSides = {

Integer.parseInt(sides[0]),

Integer.parseInt(sides[1]),

Integer.parseInt(sides[2]),

};

this.assignValuesSorted(newSides);

}

private void assignValuesSorted (int[] sides) {

Arrays.sort(sides);

this.shortest = sides[0];

this.middle = sides[1];

this.longest = sides[2];

}

public boolean couldBeTriangle() {

return (this.shortest + this.middle) > this.longest;

}

}

public static void main(String[] args) {

File file = new File("src/main/java/y2016/d03/in.txt");

try {

Scanner scanner = new Scanner(file);

String line = "";

List<Integer> values = new LinkedList<>();

while (scanner.hasNextLine()) {

line = scanner.nextLine();

String[] split = line.trim().split("\\s+");

for (String s: split) {

values.add(Integer.parseInt(s));

}

}

// iterate in steps of 9 and use offset to 3x check.

int count = 0;

for (int i = 0; i < values.size(); i += 9) {

Triangle triangle1 = new Triangle(new int[]{values.get(i ), values.get(i + 3), values.get(i + 6)});

Triangle triangle2 = new Triangle(new int[]{values.get(i + 1), values.get(i + 4), values.get(i + 7)});

Triangle triangle3 = new Triangle(new int[]{values.get(i + 2), values.get(i + 5), values.get(i + 8)});

if (triangle1.couldBeTriangle()) {

++count;

}

if (triangle2.couldBeTriangle()) {

++count;

}

if (triangle3.couldBeTriangle()) {

++count;

}

}

System.out.println("Count: " + count);

} catch (Exception e) {

System.out.println(e.getMessage());

}

}

}