Code for ' 2433. Find The Original Array of Prefix Xor' (Java) class Solution { public int[] findArray(int[] pref) { int[] ans = new int[pref.length]; ans[0] = pref[0]; for (int i = 1; i < ans.length; ++i) ans[i] = pref[i] ^ pref[i - 1]; return ans; } }