Simple Solution
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    let arr = \'\'+n+(n*2)+(n*3)\n    let check = new Set(arr)\n   return (arr.length===check.size) && !check.has(\'0\')\n  \n};\n```
['JavaScript']