# [Solution] Find The Original Array of Prefix Xor solution leetcode

Find The Original Array of Prefix Xor solution leetcode – You are given an integer array `pref` of size `n`. Find and return the array `arr` of size `n` that satisfies:

• `pref[i] = arr[0] ^ arr[1] ^ ... ^ arr[i]`.

## [Solution] Find The Original Array of Prefix Xor solution leetcode

Note that `^` denotes the bitwise-xor operation.

It can be proven that the answer is unique.

## [Solution] Find The Original Array of Prefix Xor solution leetcode

```Input: pref = [5,2,0,3,1]
Output: [5,7,2,3,2]
Explanation: From the array [5,7,2,3,2] we have the following:
- pref[0] = 5.
- pref[1] = 5 ^ 7 = 2.
- pref[2] = 5 ^ 7 ^ 2 = 0.
- pref[3] = 5 ^ 7 ^ 2 ^ 3 = 3.
- pref[4] = 5 ^ 7 ^ 2 ^ 3 ^ 2 = 1.
```

## [Solution] Find The Original Array of Prefix Xor solution leetcode

```Input: pref = [13]
Output: [13]
Explanation: We have pref[0] = arr[0] = 13.
```

## [Solution] Find The Original Array of Prefix Xor solution leetcode

• `1 <= pref.length <= 105`
• `0 <= pref[i] <= 106`