1 files changed, 35 insertions, 0 deletions
diff --git a/challenge-179/roger-bell-west/javascript/ch-2.js b/challenge-179/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..6c4838eed9
--- /dev/null
+++ b/challenge-179/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,35 @@
+#! /usr/bin/node
+
+"use strict"
+
+function sparkline(nn) {
+    let bar = [];
+    for (let bc = 9601; bc <= 9608; bc++) {
+        bar.push(String.fromCharCode(bc));
+    }
+    let mn = Math.min(...nn);
+    let mx = Math.max(...nn);
+    let inscale = mx - mn;
+    let outscale = bar.length;
+    let out = "";
+    for (let v of nn) {
+        let va = Math.min(Math.floor((v - mn) / inscale * outscale),
+                          outscale - 1);
+        out += bar[va];
+    }
+    return out;
+}
+
+if (sparkline([0, 100]) == "▁█") {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+
+if (sparkline([1, 2, 3, 4, 5, 6, 7, 8]) == "▁▂▃▄▅▆▇█") {
+    process.stdout.write("Pass");
+} else {
+    process.stdout.write("FAIL");
+}
+process.stdout.write("\n");