1. Since you know that there are at most 25 different priorities, you could get by with an array of only 25 ordinary queues plus a second array of integers called value. The number in value[i] would...

1. Since you know that there are at most 25 different priorities, you could get by with an array of only 25 ordinary queues plus a second array of integers called value. The number in value[i] would be the priority of all the items in queues[i]. It might also make sense to keep the arrays sorted according to priority.