Solution write-higher-order-arrow-functions.english.md (#18772)

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/write-higher-order-arrow-functions.english.md

@@ -71,6 +71,16 @@ console.log(squaredIntegers);
 <section id='solution'>
 
 ```js
-// solution required
+const realNumberArray = [4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2];
+const squareList = (arr) => {
+  "use strict";
+  // change code below this line
+  const squaredIntegers = arr.filter(num => Number.isInteger(num) && num > 0).map((x) => x * x);
+  // change code above this line
+  return squaredIntegers;
+};
+// test your code
+const squaredIntegers = squareList(realNumberArray);
+console.log(squaredIntegers);
 ```
 </section>