![]() the problem is that while(!arrCopy.isEmpty()) does not seem to be executing and the queue is empty. ![]() Btw, this is not the only way to sort an ArrayList of objects in Java. i wrote a new method that creates a queue, and every time it removes and returns an integer from the stack using pop, it will add it onto the queue. It contains polymorphic algorithms that operate on collections, 'wrappers', which return a new collection backed by a specified collection, and a few other odds and ends. The JDK API provides another convenient method Collections.reverseOrder(Comparator c) which returns a comparator with the opposite order of the given Comparator. So, i have a stack with 10 integers and i'd like to print it in reverse. public static Comparator reverseOrder ( ) This method returns a Comparator that reverses the order of elements in a col- lection. ![]() Private Integer "" + Integer.MIN_VALUE, "" + ((int)arrCopy.remove() + ", ") I understand that to make it in descending order i can use the 'collections.reverseOrder()' method. The Comparator interface is defined in the java.util package. I have a class that uses priority queue to display 5 strings in ascending order. I get this error: The error: side535Opg15.java:13: error: cannot find symbol Arrays(mArray. reverseOrder is a static method of the Comparator class. Import time = 1, timeUnit = time = 1, timeUnit = Mode.AverageTime}) You could wind up a JMH test (like the one below, based on another that I wrote for another answer): I shortened the values v1/v2 does to 3 because it takes times (~40m). Mai 2013 On this page we will provide java Collections reverseOrder () and. The performance difference would amount to: Reverse in collections java - Reverse Collections - Stack Overflow Possible. Sort ArrayList In Descending order using Collections.reverseOrder () We have already shown how to sort list in ascending order using Collections.sort () method.
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