# Make a Palindrome by Inserting Characters

Given a string `s`

, return the minimum number of characters needed to be inserted so that the string becomes a palindrome.

**Constraints**

`n ≤ 1,000`

where`n`

is the length of`s`

https://binarysearch.com/problems/Make-a-Palindrome-by-Inserting-Characters

## Examples

### Example 1

**Input**

- s =
`radr`

**Output**

- answer =
`1`

**Explanation**

We can insert `"a"`

to get `"radar"`

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