Mismatch Array

ARRAY

### Problem

Given an array `nums`

containing `n`

numbers taken from the range 1 to `n`

, it is known that one number from the set `{1, 2, ..., n}`

is missing and one number appears twice in `nums`

.

Return these two numbers in the form of an array.

### Examples

`findErrorNums([5, 3, 2, 7, 6, 6, 1, 4]) // returns [6, 8] // The number 6 is duplicated and the item 8 is missing. findErrorNums([2, 3, 3, 4, 5, 6, 7, 8, 9, 10]) // returns [3, 1] // The number represented by 3 appears twice // while the item 1 is absent.`

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