#union

Array Union

Array Union Array union combines elements from two arrays and returns all distinct values. It can also be defined as a multiset union that preserves counts. You use it when merging datasets while eliminating duplicates. Problem Given arrays $A$ and $B$, compute: $$ A \cup B $$ Two common variants: distinct union: each value appears once multiset union: each value appears $\max(count_A, count_B)$ times Algorithm For distinct union, use a...