trigger AssignAccountOwner on Account (before insert)
{
       Map<String, Id> industryUserMap = new Map<String, Id>{
        'Technology' => 'UI1',  
        'Healthcare' => 'UI2'   
    };
        for (Account acc : Trigger.new)
    {
        if (industryUserMap.containsKey(acc.Industry)) {
            acc.OwnerId = industryUserMap.get(acc.Industry);
        }
    }
}