Given an integer array `nums` and an integer `k`, return `true` if there are two distinct indices `i` and `j` in the array such that `nums[i] == nums[j]` and `abs(i - j) <= k`.

Example 1:

    Input: nums = [1,2,3,1], k = 3
    Output: true

Example 2:

    Input: nums = [1,0,1,1], k = 1
    Output: true

Example 3:

    Input: nums = [1,2,3,1,2,3], k = 2
    Output: false

Constraints:

- `1 <= nums.length <= 105`
- `-109 <= nums[i] <= 109`
- `0 <= k <= 105`