<p>Given an array of asynchronous functions <code>functions</code>, return a new promise <code>promise</code>. Each function in the array accepts no arguments and returns a promise. All the promises should be executed in parallel.</p> <p><code>promise</code> resolves:</p> <ul> <li>When all the promises returned from <code>functions</code> were resolved successfully in parallel. The resolved value of <code>promise</code> should be an array of all the resolved values of promises in the same order as they were in the <code>functions</code>. The <code>promise</code> should resolve when all the asynchronous functions in the array have completed execution in parallel.</li> </ul> <p><code>promise</code> rejects:</p> <ul> <li>When any of the promises returned from <code>functions</code> were rejected. <code>promise</code> should also reject with the reason of the first rejection.</li> </ul> <p>Please solve it without using the built-in <code>Promise.all</code> function.</p> <p> </p> <p><strong class="example">Example 1:</strong></p> <pre> <strong>Input:</strong> functions = [ () => new Promise(resolve => setTimeout(() => resolve(5), 200)) ] <strong>Output:</strong> {"t": 200, "resolved": [5]} <strong>Explanation:</strong> promiseAll(functions).then(console.log); // [5] The single function was resolved at 200ms with a value of 5. </pre> <p><strong class="example">Example 2:</strong></p> <pre> <strong>Input:</strong> functions = [ () => new Promise(resolve => setTimeout(() => resolve(1), 200)), () => new Promise((resolve, reject) => setTimeout(() => reject("Error"), 100)) ] <strong>Output:</strong> {"t": 100, "rejected": "Error"} <strong>Explanation:</strong> Since one of the promises rejected, the returned promise also rejected with the same error at the same time. </pre> <p><strong class="example">Example 3:</strong></p> <pre> <strong>Input:</strong> functions = [ () => new Promise(resolve => setTimeout(() => resolve(4), 50)), () => new Promise(resolve => setTimeout(() => resolve(10), 150)), () => new Promise(resolve => setTimeout(() => resolve(16), 100)) ] <strong>Output:</strong> {"t": 150, "resolved": [4, 10, 16]} <strong>Explanation:</strong> All the promises resolved with a value. The returned promise resolved when the last promise resolved. </pre> <p> </p> <p><strong>Constraints:</strong></p> <ul> <li><code>functions</code> is an array of functions that returns promises</li> <li><code>1 <= functions.length <= 10</code></li> </ul>