Data update

Task/Fibonacci-sequence/Grain/fibonacci-sequence-3.grain

@@ -0,0 +1,23 @@
+import Buffer from "buffer"
+import String from "string"
+let fib = j => {
+  // set-up minimal, growable buffer
+  let buf = Buffer.make(j * 2)
+  let mut fnow = 0, fnext = 1
+  for (let mut n = 0; n <= j; n += 1) {
+    if (n == 0 || n == 1) {
+      Buffer.addChar(' ', buf)
+      Buffer.addString(toString(n), buf)
+    } else {
+      let tempf = fnow + fnext
+      fnow = fnext
+      fnext = tempf
+      Buffer.addChar(' ', buf)
+      Buffer.addString(toString(fnext), buf)
+    }
+  }
+  // stringify buffer and return
+  Buffer.toString(buf)
+}
+let output = fib(20)
+print(output)