// Java Program to illustrate Reading from FileReader
// using BufferedReader Class

// Importing input output classes
import java.io.*;
import java.util.Arrays;

public class Main {

  public static boolean containsTrue(boolean[] array) {
    for (boolean val : array) {
      if (val) return true;
    }
    return false;
  }

  public static boolean checkAnySamePoint(double[] a, double[] b, double[] c) {
    boolean a_bSame = a == b;
    boolean a_cSame = a == c;
    boolean b_cSame = b == c;
    boolean[] testArray = { a_bSame, a_cSame, b_cSame };

    return containsTrue(testArray);
  }

  public static void main(String[] args) {
    System.out.println("test_iterate");

    double[][] point_list = {
      { -5, 2 },
      { 0, 2 },
      { 8, 2 },
      { 8, -11 },
      { 4, 2 },
      { 4, 5 },
    };

    double[] test_d = { 1, 2, 3 };

    for (double d : test_d) {
      System.out.println(d);
    }

    // 1
    for (double[] xy_a : point_list) {
      for (double[] xy_b : point_list) {
        // test if same point
        double[][] list = { xy_a, xy_b };
        long t = Arrays.stream(list).distinct().count();

        // if a and b is not the same point
        if (t == 2) {
          for (double[] xy_c : point_list) {
            // if a and b and c is not the same point
            double[][] list_t = { xy_a, xy_b, xy_c };
            long tt = Arrays.stream(list_t).distinct().count();

            if (tt == 3) {
              System.out.print(xy_a[0] + "/" + xy_a[1]);
              System.out.print("," + xy_b[0] + "/" + xy_b[1]);
              System.out.print("," + xy_c[0] + "/" + xy_c[1]);
              System.out.print("==" + checkAnySamePoint(xy_a, xy_b, xy_c));
              System.out.println("");
            } else {
              // skip if a and b and c is same
            }
          }
        } else {
          // skip if a and b is same
        }
      }
    }
  }
}