all tasks

Task/Sierpinski-triangle/D/sierpinski-triangle-1.d

@@ -0,0 +1,12 @@
+import std.stdio, std.algorithm, std.string, std.array;
+
+void main() {
+    enum level = 4;
+    auto d = ["*"];
+    foreach (n; 0 .. level) {
+        const sp = " ".replicate(2 ^^ n);
+        d = d.map!(a => sp ~ a ~ sp)().array() ~
+            d.map!(a => a ~ " " ~ a)().array();
+    }
+    d.join("\n").writeln();
+}

Task/Sierpinski-triangle/D/sierpinski-triangle-2.d

@@ -0,0 +1,19 @@
+import std.string;
+
+string sierpinski(int n) {
+    auto parts = ["*"];
+    auto space = " ";
+    foreach (i; 0 .. n) {
+        string[] parts2;
+        foreach (x; parts)
+            parts2 ~= space ~ x ~ space;
+        foreach (x; parts)
+            parts2 ~= x ~ " " ~ x;
+        parts = parts2;
+        space ~= space;
+    }
+    return parts.join("\n");
+}
+
+pragma(msg, sierpinski(4));
+void main() {}