June 2018 Update

Task/Matrix-exponentiation-operator/Sidef/matrix-exponentiation-operator.sidef

@@ -0,0 +1,22 @@
+class Array {
+    method ** (Number n { .>= 0 }) {
+        var tmp = self
+        var out = self.len.of {|i| self.len.of {|j| i == j ? 1 : 0 }}
+        loop {
+            out = (out `mmul` tmp) if n.is_odd
+            n >>= 1 || break
+            tmp = (tmp `mmul` tmp)
+        }
+        return out
+    }
+}
+
+var m = [[1, 2, 0],
+         [0, 3, 1],
+         [1, 0, 0]]
+
+for order in (0..5) {
+    say "### Order #{order}"
+    var t = (m ** order)
+    say ('  ', t.join("\n  "))
+}