Easy Method, Less Code:)
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```\n/**\n * @param {number} n\n * @return {boolean}\n */\nvar isFascinating = function (n) {\n    val = String(n) + String(n * 2) + String(n * 3)\n    if (val.length !== 9) return false\n    val = val.split(\'\').sort()\n\n    for (i = 1; i <= 9; i++) {\n        if (val[i - 1] != i) return false\n    }\n    return true\n\n\n};\n```
['JavaScript']