diff --git a/requirement-sets/1-reading-writing-files/answer.txt b/requirement-sets/1-reading-writing-files/answer.txt
new file mode 100644
index 0000000..dc34aa9
--- /dev/null
+++ b/requirement-sets/1-reading-writing-files/answer.txt
@@ -0,0 +1 @@
+count: 3
\ No newline at end of file
diff --git a/requirement-sets/1-reading-writing-files/src/index.js b/requirement-sets/1-reading-writing-files/src/index.js
index ed849f4..5827354 100644
--- a/requirement-sets/1-reading-writing-files/src/index.js
+++ b/requirement-sets/1-reading-writing-files/src/index.js
@@ -1 +1,23 @@
-// run the program
+const fs = require('fs');
+
+const data = fs.readFileSync('../input.txt');
+const dataArray = data.toString().toUpperCase().trim().split('\r\n');
+console.log(dataArray);
+
+function checkPosition(data) {
+  let count = 0;
+  dataArray.forEach((el) => {
+    const counts = { W: 0, E: 0, N: 0, S: 0 };
+    el.split('').forEach((letter) => (counts[letter] += 1));
+    if (counts.W === counts.E && counts.S === counts.N) count += 1;
+  });
+  const output = `count: ${count}`;
+  fs.writeFile('../answer.txt', output, (err) => {
+    if (err) {
+      console.error(err);
+    }
+  });
+  return count;
+}
+
+console.log(checkPosition(data));
diff --git a/requirement-sets/2-coding-tests/.eslintrc.js b/requirement-sets/2-coding-tests/.eslintrc.js
index 022b148..e2aae0e 100644
--- a/requirement-sets/2-coding-tests/.eslintrc.js
+++ b/requirement-sets/2-coding-tests/.eslintrc.js
@@ -2,14 +2,12 @@ module.exports = {
   env: {
     commonjs: true,
     es2021: true,
-    node: true
+    node: true,
+    jasmine: true,
   },
-  extends: [
-    'standard'
-  ],
+  extends: ['standard'],
   parserOptions: {
-    ecmaVersion: 'latest'
+    ecmaVersion: 'latest',
   },
-  rules: {
-  }
-}
+  rules: {},
+};
diff --git a/requirement-sets/2-coding-tests/package-lock.json b/requirement-sets/2-coding-tests/package-lock.json
index c4e3e7a..32d6cb0 100644
--- a/requirement-sets/2-coding-tests/package-lock.json
+++ b/requirement-sets/2-coding-tests/package-lock.json
@@ -12,13 +12,23 @@
         "jasmine": "^4.2.1"
       },
       "devDependencies": {
+        "@boolean-uk/boolean-prettier-config": "^1.0.2",
         "eslint": "^8.18.0",
+        "eslint-config-prettier": "^8.5.0",
         "eslint-config-standard": "^17.0.0",
         "eslint-plugin-import": "^2.26.0",
         "eslint-plugin-n": "^15.2.3",
-        "eslint-plugin-promise": "^6.0.0"
+        "eslint-plugin-prettier": "^4.0.0",
+        "eslint-plugin-promise": "^6.0.0",
+        "prettier": "^2.6.1"
       }
     },
+    "node_modules/@boolean-uk/boolean-prettier-config": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@boolean-uk/boolean-prettier-config/-/boolean-prettier-config-1.0.2.tgz",
+      "integrity": "sha512-I2Bv0GNk5vFcLgY9XLAoILkZ4EgEOclYmpy2dL/kgNG2ZZ7iuvPtY9Oaw5xWM2rc9L4LPWiATKdrESHYebOQ9w==",
+      "dev": true
+    },
     "node_modules/@eslint/eslintrc": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-1.3.0.tgz",
@@ -445,6 +455,18 @@
         "url": "https://opencollective.com/eslint"
       }
     },
+    "node_modules/eslint-config-prettier": {
+      "version": "8.5.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-8.5.0.tgz",
+      "integrity": "sha512-obmWKLUNCnhtQRKc+tmnYuQl0pFU1ibYJQ5BGhTVB08bHe9wC8qUeG7c08dj9XX+AuPj1YSGSQIHl1pnDHZR0Q==",
+      "dev": true,
+      "bin": {
+        "eslint-config-prettier": "bin/cli.js"
+      },
+      "peerDependencies": {
+        "eslint": ">=7.0.0"
+      }
+    },
     "node_modules/eslint-config-standard": {
       "version": "17.0.0",
       "resolved": "https://registry.npmjs.org/eslint-config-standard/-/eslint-config-standard-17.0.0.tgz",
@@ -634,6 +656,27 @@
         "eslint": ">=7.0.0"
       }
     },
+    "node_modules/eslint-plugin-prettier": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-4.2.1.tgz",
+      "integrity": "sha512-f/0rXLXUt0oFYs8ra4w49wYZBG5GKZpAYsJSm6rnYL5uVDjd+zowwMwVZHnAjf4edNrKpCDYfXDgmRE/Ak7QyQ==",
+      "dev": true,
+      "dependencies": {
+        "prettier-linter-helpers": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "eslint": ">=7.28.0",
+        "prettier": ">=2.0.0"
+      },
+      "peerDependenciesMeta": {
+        "eslint-config-prettier": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/eslint-plugin-promise": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/eslint-plugin-promise/-/eslint-plugin-promise-6.0.0.tgz",
@@ -757,6 +800,12 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
       "dev": true
     },
+    "node_modules/fast-diff": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/fast-diff/-/fast-diff-1.2.0.tgz",
+      "integrity": "sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==",
+      "dev": true
+    },
     "node_modules/fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -1544,6 +1593,33 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/prettier": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.7.1.tgz",
+      "integrity": "sha512-ujppO+MkdPqoVINuDFDRLClm7D78qbDt0/NR+wp5FqEZOoTNAjPHWj17QRhu7geIHJfcNhRk1XVQmF8Bp3ye+g==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin-prettier.js"
+      },
+      "engines": {
+        "node": ">=10.13.0"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
+    "node_modules/prettier-linter-helpers": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz",
+      "integrity": "sha512-GbK2cP9nraSSUF9N2XwUwqfzlAFlMNYYl+ShE/V+H8a9uNl/oUqB1w2EL54Jh0OlyRSd8RfWYJ3coVS4TROP2w==",
+      "dev": true,
+      "dependencies": {
+        "fast-diff": "^1.1.2"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/punycode": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
@@ -1883,6 +1959,12 @@
     }
   },
   "dependencies": {
+    "@boolean-uk/boolean-prettier-config": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@boolean-uk/boolean-prettier-config/-/boolean-prettier-config-1.0.2.tgz",
+      "integrity": "sha512-I2Bv0GNk5vFcLgY9XLAoILkZ4EgEOclYmpy2dL/kgNG2ZZ7iuvPtY9Oaw5xWM2rc9L4LPWiATKdrESHYebOQ9w==",
+      "dev": true
+    },
     "@eslint/eslintrc": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-1.3.0.tgz",
@@ -2208,6 +2290,13 @@
         "v8-compile-cache": "^2.0.3"
       }
     },
+    "eslint-config-prettier": {
+      "version": "8.5.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-8.5.0.tgz",
+      "integrity": "sha512-obmWKLUNCnhtQRKc+tmnYuQl0pFU1ibYJQ5BGhTVB08bHe9wC8qUeG7c08dj9XX+AuPj1YSGSQIHl1pnDHZR0Q==",
+      "dev": true,
+      "requires": {}
+    },
     "eslint-config-standard": {
       "version": "17.0.0",
       "resolved": "https://registry.npmjs.org/eslint-config-standard/-/eslint-config-standard-17.0.0.tgz",
@@ -2347,6 +2436,15 @@
         "semver": "^7.3.7"
       }
     },
+    "eslint-plugin-prettier": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-4.2.1.tgz",
+      "integrity": "sha512-f/0rXLXUt0oFYs8ra4w49wYZBG5GKZpAYsJSm6rnYL5uVDjd+zowwMwVZHnAjf4edNrKpCDYfXDgmRE/Ak7QyQ==",
+      "dev": true,
+      "requires": {
+        "prettier-linter-helpers": "^1.0.0"
+      }
+    },
     "eslint-plugin-promise": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/eslint-plugin-promise/-/eslint-plugin-promise-6.0.0.tgz",
@@ -2434,6 +2532,12 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
       "dev": true
     },
+    "fast-diff": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/fast-diff/-/fast-diff-1.2.0.tgz",
+      "integrity": "sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==",
+      "dev": true
+    },
     "fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -3008,6 +3112,21 @@
       "integrity": "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==",
       "dev": true
     },
+    "prettier": {
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.7.1.tgz",
+      "integrity": "sha512-ujppO+MkdPqoVINuDFDRLClm7D78qbDt0/NR+wp5FqEZOoTNAjPHWj17QRhu7geIHJfcNhRk1XVQmF8Bp3ye+g==",
+      "dev": true
+    },
+    "prettier-linter-helpers": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz",
+      "integrity": "sha512-GbK2cP9nraSSUF9N2XwUwqfzlAFlMNYYl+ShE/V+H8a9uNl/oUqB1w2EL54Jh0OlyRSd8RfWYJ3coVS4TROP2w==",
+      "dev": true,
+      "requires": {
+        "fast-diff": "^1.1.2"
+      }
+    },
     "punycode": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
diff --git a/requirement-sets/2-coding-tests/spec/longest-sequence.spec.js b/requirement-sets/2-coding-tests/spec/longest-sequence.spec.js
new file mode 100644
index 0000000..da99217
--- /dev/null
+++ b/requirement-sets/2-coding-tests/spec/longest-sequence.spec.js
@@ -0,0 +1,21 @@
+const longestSequence = require('../src/longest-sequence.js');
+
+describe('Longest sequence', () => {
+  it('scenario 1', () => {
+    expect(longestSequence('dghhhmhmx')).toEqual({ h: 3 });
+  });
+  it('scenario 2', () => {
+    expect(longestSequence('dhkkhhKKKt')).toEqual({ k: 3 });
+  });
+  it('scenario 3', () => {
+    expect(longestSequence('aBbBadddadd')).toEqual({ b: 3 });
+  });
+  it('scenario 4', () => {
+    expect(longestSequence('gggttrfdesdcxzzzzzzzzzz')).toEqual({ z: 10 });
+  });
+  it('scenario 5', () => {
+    expect(longestSequence('jshetdrefdddesawwesdcxzwwwwwwwwww')).toEqual({
+      w: 10,
+    });
+  });
+});
diff --git a/requirement-sets/2-coding-tests/src/longest-sequence.js b/requirement-sets/2-coding-tests/src/longest-sequence.js
new file mode 100644
index 0000000..a6b5a38
--- /dev/null
+++ b/requirement-sets/2-coding-tests/src/longest-sequence.js
@@ -0,0 +1,30 @@
+const longestSequence = (str) => {
+  let longestSequence = { a: 0 }
+  let currentSequence = {}
+
+  for (let i = 0; i < str.length - 1; i++) {
+    const char = str[i].toLowerCase()
+    const nextChar = str[i + 1].toLowerCase()
+
+    if (!currentSequence[char]) {
+      currentSequence = {}
+      currentSequence[char] = 1
+    }
+
+    if (char === nextChar) {
+      currentSequence[char] += 1
+    }
+    if (Object.values(currentSequence)[0] > Object.values(longestSequence)[0]) {
+      longestSequence = { ...currentSequence }
+    } else if (
+      Object.values(currentSequence)[0] === Object.values(longestSequence)[0]
+    ) {
+      if (Object.keys(currentSequence)[0] < Object.keys(longestSequence)[0]) {
+        longestSequence = { ...currentSequence }
+      }
+    }
+  }
+  return longestSequence
+}
+
+module.exports = longestSequence
diff --git a/requirement-sets/3-test-js-grad/src/01-count-major-versions-above-10/index.js b/requirement-sets/3-test-js-grad/src/01-count-major-versions-above-10/index.js
index c6de991..30c6e1e 100644
--- a/requirement-sets/3-test-js-grad/src/01-count-major-versions-above-10/index.js
+++ b/requirement-sets/3-test-js-grad/src/01-count-major-versions-above-10/index.js
@@ -12,8 +12,19 @@ GET https://api.npms.io/v2/search/suggestions?q=react
 
 */
 
+const axios = require('axios');
+
 module.exports = async function countMajorVersionsAbove10() {
-  // TODO
+  try {
+    const { data } = await axios.get(
+      'https://api.npms.io/v2/search/suggestions?q=react'
+    );
+    const answer = data
+      .map((el) => el.package.version.split('.')[0])
+      .filter((el) => Number(el) >= 10).length;
 
-  return number
+    return answer;
+  } catch (err) {
+    console.log(err);
+  }
 };
diff --git a/requirement-sets/3-test-js-grad/src/02-oldest-package-name/index.js b/requirement-sets/3-test-js-grad/src/02-oldest-package-name/index.js
index 93d773f..2205915 100644
--- a/requirement-sets/3-test-js-grad/src/02-oldest-package-name/index.js
+++ b/requirement-sets/3-test-js-grad/src/02-oldest-package-name/index.js
@@ -10,9 +10,22 @@ GET https://api.npms.io/v2/search/suggestions?q=react
 *  the "name" of the package that has the oldest "date" value
 
 */
+const axios = require('axios');
 
 module.exports = async function oldestPackageName() {
-  // TODO
+  try {
+    const { data } = await axios.get(
+      'https://api.npms.io/v2/search/suggestions?q=react'
+    );
 
-  return name
+    const name = data
+      .map((el) => [el.package.date, el.package.name])
+      .reduce((previous, current) => {
+        return previous[0] < current[0] ? previous : current;
+      })[1];
+
+    return name;
+  } catch (err) {
+    console.log(err);
+  }
 };
diff --git a/requirement-sets/3-test-js-grad/src/03-organise-maintainers/index.js b/requirement-sets/3-test-js-grad/src/03-organise-maintainers/index.js
index ed17e1d..b4fbbaa 100644
--- a/requirement-sets/3-test-js-grad/src/03-organise-maintainers/index.js
+++ b/requirement-sets/3-test-js-grad/src/03-organise-maintainers/index.js
@@ -2,6 +2,10 @@
 
 * Make the following HTTP request with either axios or node-fetch:
 
+/*
+
+* Make the following HTTP request with either axios or node-fetch:
+
 GET https://api.npms.io/v2/search/suggestions?q=react
 
 ******
@@ -23,8 +27,32 @@ GET https://api.npms.io/v2/search/suggestions?q=react
 
 */
 
-module.exports = async function organiseMaintainers() {
-  // TODO
+const axios = require('axios');
 
-  return maintainers
+module.exports = async function organiseMaintainers() {
+  let maintainers = [];
+
+  const { data } = await axios.get(
+    'https://api.npms.io/v2/search/suggestions?q=react'
+  );
+
+  data.forEach((dep) => {
+    dep.package.maintainers.forEach((maintainer) => {
+      const record = maintainers.find((obj) => {
+        return obj.username === maintainer.username;
+      });
+      if (!record) {
+        const newRecord = {
+          username: maintainer.username,
+          packageNames: [dep.package.name],
+        };
+        maintainers.push(newRecord);
+      } else {
+        record.packageNames.push(dep.package.name);
+      }
+    });
+  });
+
+  // console.log('DATA : ', JSON.stringify(data[0], null, 2));
+  return maintainers;
 };