feat(curriculum): convert DNA pairing challenge to lab (#62132)

Co-authored-by: Ilenia <26656284+ilenia-magoni@users.noreply.github.com>

client/i18n/locales/english/intro.json

@@ -3473,6 +3473,12 @@
           "In this lab, you will design a sum all numbers algorithm. This algorithm takes an array of two numbers and returns the sum of those two numbers plus the sum of all the numbers between them."
         ]
       },
+      "lab-dna-pair-generator": {
+        "title": "Implement a DNA Pair Generator",
+        "intro": [
+          "In this lab you will implement a DNA base pairing algorithm that converts a single DNA strand into complementary base pairs."
+        ]
+      },
       "lab-html-entitiy-converter": {
         "title": "Implement an HTML Entity Converter",
         "intro": [

client/src/pages/learn/full-stack-developer/lab-dna-pair-generator/index.md

@@ -0,0 +1,9 @@
+---
+title: Introduction to the Implement a DNA Pair Generator
+block: lab-dna-pair-generator
+superBlock: full-stack-developer
+---
+
+## Introduction to the Implement a DNA Pair Generator
+
+In this lab you will implement a DNA base pairing algorithm that converts a single DNA strand into complementary base pairs.

curriculum/challenges/english/blocks/lab-dna-pair-generator/afd15382cdfb22c9efe8b7de.md

@@ -0,0 +1,100 @@
+---
+id: afd15382cdfb22c9efe8b7de
+title: Implement a DNA Pair Generator
+challengeType: 26
+dashedName: implement-a-dna-pair-generator
+---
+
+# --description--
+
+Pairs of DNA strands consist of nucleobase pairs. Base pairs are represented by the characters <em>AT</em> and <em>CG</em>, which form building blocks of the DNA double helix.
+
+In this lab, you will write a function to match the missing base pairs for the provided DNA strand. For each character in the provided string, find the base pair character.
+
+For example, for the input `GCG`, return `[["G", "C"], ["C", "G"], ["G", "C"]]`
+
+The character and its pair are paired up in an array, and all the arrays are grouped into one encapsulating array.
+
+**Objective**: Fulfill the user stories below and get all the tests to pass to complete the lab.
+
+**User Stories:**
+
+1. You should have a `pairElement` function that takes a string as an argument.
+1. The `pairElement` function should return a 2d array.
+1. When given `A`, the function should pair it with `T`.
+1. When given `T`, the function should pair it with `A`.
+1. When given `C`, the function should pair it with `G`.
+1. When given `G`, the function should pair it with `C`.
+1. Each pair should be returned as an array with the original character first and its complement second.
+
+# --hints--
+
+You should create a function named `pairElement`.
+
+```js
+assert.isFunction(pairElement);
+```
+
+`pairElement` should take a single argument.
+
+```js
+assert.lengthOf(pairElement, 1);
+```
+
+`pairElement("ATCGA")` should return `[["A","T"],["T","A"],["C","G"],["G","C"],["A","T"]]`.
+
+```js
+assert.deepEqual(pairElement('ATCGA'), [
+  ['A', 'T'],
+  ['T', 'A'],
+  ['C', 'G'],
+  ['G', 'C'],
+  ['A', 'T']
+]);
+```
+
+`pairElement("TTGAG")` should return `[["T","A"],["T","A"],["G","C"],["A","T"],["G","C"]]`.
+
+```js
+assert.deepEqual(pairElement('TTGAG'), [
+  ['T', 'A'],
+  ['T', 'A'],
+  ['G', 'C'],
+  ['A', 'T'],
+  ['G', 'C']
+]);
+```
+
+`pairElement("CTCTA")` should return `[["C","G"],["T","A"],["C","G"],["T","A"],["A","T"]]`.
+
+```js
+assert.deepEqual(pairElement('CTCTA'), [
+  ['C', 'G'],
+  ['T', 'A'],
+  ['C', 'G'],
+  ['T', 'A'],
+  ['A', 'T']
+]);
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+
+```
+
+# --solutions--
+
+```js
+var lookup = Object.create(null);
+lookup.A = 'T';
+lookup.T = 'A';
+lookup.C = 'G';
+lookup.G = 'C';
+
+function pairElement(str) {
+ return str.split('').map(function(p) {return [p, lookup[p]];});
+}
+```

curriculum/structure/blocks/lab-dna-pair-generator.json

@@ -0,0 +1,15 @@
+{
+  "name": "Implement a DNA Pair Generator",
+  "isUpcomingChange": false,
+  "dashedName": "lab-dna-pair-generator",
+  "helpCategory": "JavaScript",
+  "blockLayout": "link",
+  "blockType": "lab",
+  "challengeOrder": [
+    {
+      "id": "afd15382cdfb22c9efe8b7de",
+      "title": "Implement a DNA Pair Generator"
+    }
+  ],
+  "usesMultifileEditor": true
+}

curriculum/structure/superblocks/full-stack-developer.json

@@ -388,6 +388,7 @@
             "lecture-working-with-the-arguments-object-and-rest-parameters",
             "lab-password-generator",
             "lab-sum-all-numbers-algorithm",
+            "lab-dna-pair-generator",
             "lab-html-entitiy-converter",
             "lab-optional-arguments-sum-function",
             "review-javascript-fundamentals",