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Check if a given Binary Tree is Heap
October 28, 2015

Given a binary tree we need to check it has heap property or not, Binary tree need to fulfill following two conditions for being a… Read More »

October 28, 2015

Given a binary tree we need to check it has heap property or not, Binary tree need to fulfill following two conditions for being a… Read More »

October 8, 2015

Heaps are mainly used for implementing priority queue. We have discussed below heaps in previous posts. Binary Heap Binomial Heap In terms of Time Complexity,… Read More »

October 4, 2015

Given an array, how to check if the given array represents a Binary Max-Heap.

September 7, 2015

A typical Priority Queue requires following operations to be efficient. Get Top Priority Element (Get minimum or maximum) Insert an element Remove top priority element… Read More »

June 22, 2015

Given an infinite stream of integers, find the k’th largest element at any point of time.

June 14, 2015

Although QuickSort works better in practice, the advantage of HeapSort worst case upper bound of O(nLogn). MergeSort also has upper bound as O(nLogn) and works… Read More »

November 23, 2014

Given an array and a number k where k is smaller than size of array, we need to find the k’th smallest element in the… Read More »

November 3, 2014

The main application of Binary Heap is as implement priority queue. Binomial Heap is to extension of Binary Heap that provides faster union or merge… Read More »

November 1, 2014

A Binary Heap is a Binary Tree with following properties. 1) It’s a complete tree (All levels are completely filled except possibly the last level… Read More »

October 22, 2014

Given an n x n matrix, where every row and column is sorted in non-decreasing order. Print all elements of matrix in sorted order.

August 17, 2014

There are given n ropes of different lengths, we need to connect these ropes into one rope. The cost to connect two ropes is equal… Read More »

July 29, 2013

Given k sorted arrays of size n each, merge them and print the sorted output.

February 8, 2013

Design a Data Structure for the following operations. The data structure should be efficient enough to accommodate the operations according to their frequency.

September 26, 2012

Given N machines. Each machine contains some numbers in sorted form. But the amount of numbers, each machine has is not fixed. Output the numbers… Read More »

September 8, 2012

Given an array of n elements, where each element is at most k away from its target position, devise an algorithm that sorts in O(n… Read More »