update,

jacksonyeet/java-assignment/src/test_iterate.java

@@ -0,0 +1,74 @@
+// 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
+        }
+      }
+    }
+  }
+}