Finding the median of an unsorted array
You can use the Median of Medians algorithm to find median of an unsorted array in linear time.
You can use the Median of Medians algorithm to find median of an unsorted array in linear time.
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
Here’s what MAX-HEAPIFY does: Given a node at index i whose left and right subtrees are max-heaps, MAX-HEAPIFY moves the node at i down the max-heap until it no longer violates the max-heap property (that is, the node is not smaller than its children). The longest path that a node can take before it is in the proper position … Read more
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
You might like IntervalHeap from the C5 Generic Collection Library. To quote the user guide Class IntervalHeap<T> implements interface IPriorityQueue<T> using an interval heap stored as an array of pairs. The FindMin and FindMax operations, and the indexer’s get-accessor, take time O(1). The DeleteMin, DeleteMax, Add and Update operations, and the indexer’s set-accessor, take time O(log n). In contrast to an ordinary priority queue, an interval heap … Read more
I’m very new to C++, and I was wondering if there was a way to make a min heap in C++ from the standard library.
I am porting a C++ library to Java and I need a heap data structure. Is there a standard implementation or will I need to do it myself?
Run the JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)
Run the JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)