add weighted quick union implementation
Implement PathCompression and weightedPathCompression quick union
Fix quickFind
Fix weighted Quick Union, I didn't understand weights.. they are meant to be the number of nodes in each tree not the height of the tree
Fix also WeightedPathCompressionQuickUnion.
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clean test
No need of finding root here
Sort base class
Add fisrt beahviour test
Insertion Sort draft and test