# Day 28 of 30-Day LeetCode Challenge

1 min readApr 28, 2020

You have a queue of integers, you need to retrieve the first unique integer in the queue.

Implement the `FirstUnique`

class:

`FirstUnique(int[] nums)`

Initializes the object with the numbers in the queue.`int showFirstUnique()`

returns the value of**the first unique**integer of the queue, and returns**-1**if there is no such integer.`void add(int value)`

insert value to the queue.