This question is related to linked-list representation of disjoint sets. Consider two sets Sx and Sy that have 3 and 5 elements, respectively. A union (UNION(x,y)) of the sets Sx and Sy represented by x and y, respectively will perform update(s) of the attribute .next.

A union (UNION(x,y)) of the sets Sx and Sy represented by x and y, respectively will perform 4 update(s) of the attribute.

Explanation:

The UNION (x, y) disjoint-set data structure unites the dynamic sets that contain x and y, say Sx and Sy, into a new set.  It is called the union of the two sets. Before the union operation, the two sets are disjoint.  After the union operation, the representative of the resulting set is some member of Sx and Sy or either Sx or Sy. The sets Sx and Sy are then destroyed to remove them from the union collection S.  So, four operations are required.

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Explanation:

The black Jack game using Python has score card variable for the player and the dealer. A conditional if statement would add a random card number if the player decides to hit but prints a string of the total card value collected if not and compares the integer with the dealer's score to reveal to winner.

The game creates an infinite loop to add card value to player's score if he chooses to hit and break the loop if he stays. The dealer's loop adds random number to the score but break if the score is equal to or greater than 16. Both scores are compares with an if statement to decide the winner.