Easy
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[]} pref\n * @return {number[]}\n */\nvar findArray = function(pref) {\nlet arr = [];\narr[0] = pref[0];\nfor(i=1;i<pref.length;i++){\n    arr[i] = pref[i] ^ pref[i-1]\n}\nreturn arr\n};\n```
['JavaScript']