# Sum of First N Odd Integers

Given an integer `n`

, return the sum of the first `n`

positive odd integers.

**Constraints**

`n ≤ 1,000`

https://binarysearch.com/problems/Sum-of-First-N-Odd-Integers

## Examples

### Example 1

**Input**

- n =
`5`

**Output**

- answer =
`25`

**Explanation**

The first `5`

odd integers are `[1, 3, 5, 7, 9]`

and its sum is `25`

.

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