I have submitted a few solutions, which I am able to open from my account, but, when I am sharing this link with anyone else, they see that this does not exist.
https://leetcode.com/problems/number-of-operations-to-make-network-connected/discuss/1296783/java-union-find-3ms
https://leetcode.com/problems/count-of-smaller-numbers-after-self/discuss/1297871/java-segment-tree