Adding Kotlin solution for origin-containing triangle

2 files changed, 47 insertions, 0 deletions

diff --git a/challenge-101/ziameraj16/README.md b/challenge-101/ziameraj16/README.md
index bdcc1e38b4..7662230091 100644
--- a/challenge-101/ziameraj16/README.md
+++ b/challenge-101/ziameraj16/README.md
@@ -37,3 +37,25 @@ Enter third coordinates
 -6,0
 Output: 1
 ```
+
+## Kotlin Solution
+To compile the code run
+```java
+kotlinc OriginContainingTriangleKotlin.kt
+```
+To run
+```java
+kotlin OriginContainingTriangleKotlin
+```
+### Example
+```bash
+/perlweeklychallenge-club/challenge-101/ziameraj16/kotlin$ kotlinc OriginContainingTriangleKotlin.kt
+/perlweeklychallenge-club/challenge-101/ziameraj16/kotlin$ kotlin OriginContainingTriangleKotlin
+Enter first coordinates
+0,1
+Enter second coordinates
+2,0
+Enter third coordinates
+-6,0
+Output: 1
+```
diff --git a/challenge-101/ziameraj16/kotlin/OriginContainingTriangleKotlin.kt b/challenge-101/ziameraj16/kotlin/OriginContainingTriangleKotlin.kt
new file mode 100644
index 0000000000..bda9b2876c
--- /dev/null
+++ b/challenge-101/ziameraj16/kotlin/OriginContainingTriangleKotlin.kt
@@ -0,0 +1,25 @@
+import java.util.*
+
+object OriginContainingTriangleKotlin {
+
+    @JvmStatic
+    fun main(args: Array<String>) {
+        val scanner = Scanner(System.`in`)
+        println("Enter first coordinates")
+        val firstCoordinate = scanner.nextLine().split(",").map { it.toInt() }.toTypedArray()
+        println("Enter second coordinates")
+        val secondCoordinate = scanner.nextLine().split(",").map { it.toInt() }.toTypedArray()
+        println("Enter third coordinates")
+        val thirdCoordinate = scanner.nextLine().split(",").map { it.toInt() }.toTypedArray()
+        println("Output: " + doesTriangleContainsOrigin(firstCoordinate[0], firstCoordinate[1], secondCoordinate[0], secondCoordinate[1], thirdCoordinate[0], thirdCoordinate[1]))
+    }
+
+    fun doesTriangleContainsOrigin(x1: Int, y1: Int, x2: Int, y2: Int, x3: Int, y3: Int): Int {
+        val area = Math.abs((x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2)) / 2.0)
+        val area1 = Math.abs((x2 * y3 + x3 * -y2) / 2.0)
+        val area2 = Math.abs((x1 * -y3 + x3 * y1) / 2.0)
+        val area3 = Math.abs((x1 * y2 + x2 * -y1) / 2.0)
+        val aumOfAreaOfSmallTriangles = area1 + area2 + area3
+        return if (area == aumOfAreaOfSmallTriangles) 1 else 0
+    }
+}