Added Comments in task1. Inserted basic data structures in task3.

hw2/task3/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "task3"
+version = "0.1.0"
+authors = ["Lorenz Bung <lorenz.bung@googlemail.com>"]
+
+[dependencies]

hw2/task3/src/lib.rs

@@ -0,0 +1,18 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}
+pub struct PascalsTriangle {
+    height: u32,
+}
+
+impl PascalsTriangle {
+    pub fn new(i:u32) {
+        height = i;
+    }
+    pub fn rows() -> Vec<Vec<u32>> {
+    }
+}