add hw2

node_modules/ramda/es/lastIndexOf.js

@@ -0,0 +1,44 @@
+import _curry2 from "./internal/_curry2.js";
+import _isArray from "./internal/_isArray.js";
+import equals from "./equals.js";
+/**
+ * Returns the position of the last occurrence of an item in an array, or -1 if
+ * the item is not included in the array. [`R.equals`](#equals) is used to
+ * determine equality.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.1.0
+ * @category List
+ * @sig a -> [a] -> Number
+ * @param {*} target The item to find.
+ * @param {Array} xs The array to search in.
+ * @return {Number} the index of the target, or -1 if the target is not found.
+ * @see R.indexOf, R.findLastIndex
+ * @example
+ *
+ *      R.lastIndexOf(3, [-1,3,3,0,1,2,3,4]); //=> 6
+ *      R.lastIndexOf(10, [1,2,3,4]); //=> -1
+ */
+
+var lastIndexOf =
+/*#__PURE__*/
+_curry2(function lastIndexOf(target, xs) {
+  if (typeof xs.lastIndexOf === 'function' && !_isArray(xs)) {
+    return xs.lastIndexOf(target);
+  } else {
+    var idx = xs.length - 1;
+
+    while (idx >= 0) {
+      if (equals(xs[idx], target)) {
+        return idx;
+      }
+
+      idx -= 1;
+    }
+
+    return -1;
+  }
+});
+
+export default lastIndexOf;