Carrying value is an accounting measure of value, where the value of an asset or a company is based on the figures in the company's balance sheet.

Are your actions in the right or wrong? Join Naomi Wilkinson in a song and movement routine.

A PriorityQueue is a list that always keeps its items sorted based on some rule, like smallest to largest. So, when you take an item out, you always get the one with the highest (or lowest) priority.