diff --git a/solutions/120.js b/solutions/120.js
new file mode 100644
index 0000000..a6b7d2c
--- /dev/null
+++ b/solutions/120.js
@@ -0,0 +1,16 @@
+// check if arr is a palindrone 
+// daniel s.
+
+const solution = (arr) => {
+  if (arr.length <= 1) {
+    return true;
+  }
+  if (arr.pop() === arr.shift()) {
+    return solution(arr);
+  }
+  return false;
+};
+
+module.exports = {
+  solution: solution
+};
diff --git a/test/120.js b/test/120.js
new file mode 100644
index 0000000..cc4318e
--- /dev/null
+++ b/test/120.js
@@ -0,0 +1,11 @@
+const expect = require('chai').expect;
+let solution = require('../solutions/120').solution;
+
+describe('reverse array', () => {
+  it('should return true if input string is a palindrome', () => {
+    expect(solution(['r', 'a', 'c', 'e', 'c', 'a', 'r'])).to.equal(true);
+  });
+  it('should return true if input string is a palindrome', () => {
+    expect(solution(['h', 'w', 'e', 's', 'u'])).to.equal(false);
+   });
+});