# Shortest Palindrome

Given a string***s***, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation.

**Example 1:**

```
Input: "aacecaaa"
Output: "aaacecaaa"
```

**Example 2:**

```
Input: "abcd"
Output: "dcbabcd"
```

Solution

```
class Solution {
    public String shortestPalindrome(String s) {

    }
}
```


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