1 files changed, 26 insertions, 0 deletions
diff --git a/challenge-264/zapwai/javascript/ch-2.js b/challenge-264/zapwai/javascript/ch-2.js
new file mode 100644
index 0000000000..d0cee7a842
--- /dev/null
+++ b/challenge-264/zapwai/javascript/ch-2.js
@@ -0,0 +1,26 @@
+let source  = [0, 1, 2, 3, 4];
+let indices = [0, 1, 2, 2, 1];
+proc(source, indices);
+
+source  = [1, 2, 3, 4, 0];
+indices = [0, 1, 2, 3, 0];
+proc(source, indices);
+
+source = [1];
+indices = [0];
+proc(source, indices);
+
+function proc(s, i) {
+    let source = s;
+    let indices = i;
+    console.log("Input:", source, indices);
+    let target = [];
+    for (let i = 0; i < source.length; i++) {
+	let chunk = target.splice(indices[i]);
+	target[indices[i]] = source[i];
+	if (chunk.length > 0)
+	    for (let j = 0; j < chunk.length; j++)
+		target.push(chunk[j]);
+    }
+    console.log("Output:", target);
+}