fix(curriculum): Rewrote the Write Higher-Order Arrow Functions challenge and moved to Functional Programming section (#35954)

* fix: reworded and moved challenge

* fix: removed extra line

Co-Authored-By: RandellDawson <5313213+RandellDawson@users.noreply.github.com>

* fix; removed extra line

Co-Authored-By: RandellDawson <5313213+RandellDawson@users.noreply.github.com>

* fix: reworded sentence

Co-Authored-By: RandellDawson <5313213+RandellDawson@users.noreply.github.com>

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/use-higher-order-functions-map-filter-or-reduce-to-solve-a-complex-problem.english.md

@@ -0,0 +1,82 @@
+---
+id: 587d7b88367417b2b2512b45
+title: Use Higher-Order Functions map, filter, or reduce to Solve a Complex Problem 
+challengeType: 1
+---
+
+## Description
+<section id='description'>
+Now that you have worked through a few challenges using higher-order functions like <code>map()</code>, <code>filter()</code>, and <code>reduce()</code>, you now get to apply them to solve a more complex challenge.
+</section>
+
+## Instructions
+<section id='instructions'>
+We have defined a function named <code>squareList</code>.  You need to complete the code for the <code>squareList</code> function using any combination of <code>map()</code>, <code>filter()</code>, and <code>reduce()</code> so that it returns a new array containing only the square of <em>only</em> the positive integers (decimal numbers are not integers) when an array of real numbers is passed to it.  An example of an array containing only real numbers is <code>[-3, 4.8, 5, 3, -3.2]</code>.
+<strong>Note:</strong> Your function should not use any kind of <code>for</code> or <code>while</code> loops or the <code>forEach()</code> function.
+</section>
+
+## Tests
+<section id='tests'>
+
+```yml
+tests:
+  - text: <code>squareList</code> should be a <code>function</code>.
+    testString: assert.typeOf(squareList, 'function'), '<code>squareList</code> should be a <code>function</code>';
+  - text: for or while loops or forEach should not be used.
+    testString: assert(!removeJSComments(code).match(/for|while|forEach/g));
+  - text: <code>map</code>, <code>filter</code>, or <code>reduce</code> should be used.
+    testString: assert(removeJSComments(code).match(/\.(map|filter|reduce)\s*\(/g));
+  - text: The function should return an <code>array</code>.
+    testString: assert(Array.isArray(squareList([4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2])));
+  - text: <code>squareList([4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2])</code> should return <code>[16, 1764, 36]</code>.
+    testString: assert.deepStrictEqual(squareList([4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2]), [16, 1764, 36]);
+  - text: <code>squareList([-3.7, -5, 3, 10, 12.5, 7, -4.5, -17, 0.3])</code> should return <code>[9, 100, 49]</code>.
+    testString: assert.deepStrictEqual(squareList([-3.7, -5, 3, 10, 12.5, 7, -4.5, -17, 0.3]), [9, 100, 49]);  
+```
+
+</section>
+
+## Challenge Seed
+<section id='challengeSeed'>
+
+<div id='js-seed'>
+
+```js
+const squareList = (arr) => {
+  // only change code below this line
+  return arr;
+  // only change code above this line
+};
+
+// test your code
+const squaredIntegers = squareList([-3, 4.8, 5, 3, -3.2]);
+console.log(squaredIntegers);
+```
+
+</div>
+
+<div id='js-teardown'>
+
+```js
+const removeJSComments = str => str.replace(/\/\*[\s\S]*?\*\/|\/\/.*$/gm, '');
+```
+
+</div>
+
+</section>
+
+## Solution
+<section id='solution'>
+
+```js
+const squareList = (arr) => {
+  const positiveIntegers = arr.filter(num => {
+    return num >= 0 && Number.isInteger(num);
+  });
+  const squaredIntegers = positiveIntegers.map(num => {
+    return num ** 2;
+  });
+  return squaredIntegers;
+};
+```
+</section>