Challenge 152 LK Perl Python PHP Java

1 files changed, 58 insertions, 0 deletions

diff --git a/challenge-152/lubos-kolouch/java/ch-2.java b/challenge-152/lubos-kolouch/java/ch-2.java
new file mode 100644
index 0000000000..85e10266cb
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+++ b/challenge-152/lubos-kolouch/java/ch-2.java
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+class Point {
+  int x, y;
+
+  public Point(int x, int y) {
+    this.x = x;
+    this.y = y;
+  }
+};
+
+class Rectangle {
+  Point left, right;
+
+  public Rectangle(Point left, Point right) {
+    this.left = left;
+    this.right = right;
+  }
+
+  public int get_area() {
+    return Math.abs(this.left.x - this.right.x) *
+        Math.abs(this.left.y - this.right.y);
+  }
+};
+
+class OverlapArea {
+
+  static int get_total_area(Rectangle first, Rectangle second) {
+    int area1 = first.get_area();
+    int area2 = second.get_area();
+
+    // calculate the overlapping area
+    int x_dist = Math.min(first.right.x, second.right.x) -
+                 Math.max(first.left.x, second.left.x);
+    int y_dist = Math.min(first.right.y, second.right.y) -
+                 Math.max(first.left.y, second.left.y);
+    int areaI = 0;
+    if (x_dist > 0 && y_dist > 0) {
+      areaI = x_dist * y_dist;
+    }
+
+    return (area1 + area2 - areaI);
+  }
+
+  public static void main(String[] args) {
+    Rectangle first = new Rectangle(new Point(-1, 0), new Point(2, 2));
+    Rectangle second = new Rectangle(new Point(0, -1), new Point(4, 4));
+
+    if (get_total_area(first, second) != 22) {
+      System.out.println("Failed test 1");
+    }
+
+    first = new Rectangle(new Point(-3, -1), new Point(1, 3));
+    second = new Rectangle(new Point(-1, -3), new Point(2, 2));
+
+    if (get_total_area(first, second) != 25) {
+      System.out.println("Failed test 2");
+    }
+  }
+}