Hi Raghu, There are quite a few existing posts which cover this, including profiling of various approaches (may not be important unless your lists can be very long). Read the threads not just the response I point to: https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/30160/fastest-way-to-merge-two-lists-without-duplicates/1336495#1336495 https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/27201/how-to-remove-repeat-element-in-a-list/1328941#1328941 https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/21559/how-to-declare-an-array-of-unknown-size/1307980#1307980 Regards, Andrew![]()
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