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binary-trees
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Atwood's Law applied to CS101 - Classic algorithms and data structures implemented in JavaScript
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Python Library for Studying Binary Trees
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Oct 28, 2020 - C++
FazeelUsmani
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Oct 8, 2020
Given an array A of random integers and an integer k, find and return the kth largest element in the array.
Try to do this question in less than O(nlogn) time.
Input Format :
Line 1 : An integer N i.e. size of the array
Line 2 : N integers which are elements of the array, separated by spaces
Line 3 : An integer k
Output Format :
kth largest element
Input Constraints :
1 <= N, Ai,
DrawRacket4Me draws trees and graphs from your code, making it easier to check if the structure is what you wanted.
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Jan 7, 2017 - JavaScript
nickzuber
commented
Dec 12, 2016
I'm 100% sure I accidentally implemented this wrong for two children nodes — should fix. Algorithm should be something like:
find node to delete
if has two children
_node := max in left subtree || min in right subtree
swap values
delete _node
Efficient Binary heap (priority queue, binary tree) data structure for JavaScript / TypeScript. Includes JavaScript methods, Python's heapq module methods, and Java's PriorityQueue methods.
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Priority Queue in Typescript & Javascript
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My DS practices using C++.
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steps to reproduce
Write a loop, from 1 to 80000, each time add a random int to the max heap.
In theory it takes very little time(NlogN, N=80000, <1sec ), but the program does take a long time.
I'v also tested the BinaryHeap in https://github.com/SolutionsDesign/Algorithmia, it performs well, so it is probably due to the bad algorithm.