Those who are getting error in 3rd case, Actually just have to push to exact index.
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```javascript []\n/**\n * @param {Array<Function>} functions\n * @return {Promise<any>}\n */\nvar promiseAll = function (functions) {\n    return new Promise((resolve, reject) => {\n        let results = new Array(functions.length);\n        let count = 0;\n        functions.forEach((promise, i) => {\n            promise().then((result) => {\n                results[i] = result\n\n                count += 1;\n\n                if (count === functions.length) {\n                    resolve(results);\n                }\n            }).catch((error) => {\n                reject("Error")\n            })\n        })\n    })\n};\n\n/**\n * const promise = promiseAll([() => new Promise(res => res(42))])\n * promise.then(console.log); // [42]\n */\n```
['JavaScript']