[1722.Minimize-Hamming-Distance-After-Swap-Operations](https://github.com/wisdompeak/LeetCode/tree/master/Union_Find/1722.Minimize-Hamming-Distance-After-Swap-Operations) (M+)

[803.Bricks-Falling-When-Hit](https://github.com/wisdompeak/LeetCode/tree/master/DFS/803.Bricks-Falling-When-Hit) (H)

[1970.Last-Day-Where-You-Can-Still-Cross](https://github.com/wisdompeak/LeetCode/tree/master/Union_Find/1970.Last-Day-Where-You-Can-Still-Cross) (H-)

* ``Prime Factors``

[952.Largest-Component-Size-by-Common-Factor](https://github.com/wisdompeak/LeetCode/tree/master/Union_Find/952.Largest-Component-Size-by-Common-Factor) (H)

[1627.Graph-Connectivity-With-Threshold](https://github.com/wisdompeak/LeetCode/tree/master/Union_Find/1627.Graph-Connectivity-With-Threshold) (M+)