arrays/

https://leetcode.com/problems/sort-integers-by-the-number-of-1-bits/description/

https://leetcode.com/problems/find-the-winner-of-an-array-game/description/

https://leetcode.com/problems/frequency-of-the-most-frequent-element/description/

https://leetcode.com/problems/find-unique-binary-string/

https://leetcode.com/problems/minimum-amount-of-time-to-collect-garbage/

https://leetcode.com/problems/first-unique-character-in-a-string/description/?envType=daily-question&envId=2024-02-05