@@ -0,0 +1,14 @@
+function insertionSort(arr) {
+  for (let i = 0; i < arr.length; i++) {
+    let e = arr[i];
+    let j;
+
+    for (j = i - 1; j >= 0 && arr[j] > e; j--) {
+      arr[j + 1] = arr[j];
+    }
+    arr[j + 1] = e;
+  }
+  return arr;
+};
+
+console.log(insertionSort([4,2,3,1,5]);