- https://leetcode.com/problems/subtree-of-another-tree/\n- var of https://leetcode.com/problems/k-closest-points-to-origin/\nGiven a center point, a list of other points, and a number k.  \nFind the k closest points to the center point.  \nReturn a list of the points sorted by the distance from the center.

https://leetcode.com/problems/subtree-of-another-tree/\n- var of https://leetcode.com/problems/k-closest-points-to-origin/\nGiven a center point, a list of othe