Both are product types which let you build types from multiple simpler types. Some languages treat tuples as a kind of record. Definitions A tuple is an ordered group of elements, like (10, 25). A record is typically a group of named elements like { “x”: 10, “y”: 25 } where the value has two … Read more
The solution still works out to a binary search in the sense that you’ll need to partition the array into two parts to be examined. In a sorted array, you just look at each part and determine whether the element lives in the first part (let’s call this A) or the second part (B). Since, … Read more
Vector is another name for dynamic arrays. It is the name used for the dynamic array data structure in C++. If you have experience in Java you may know them with the name ArrayList. (Java also has an old collection class called Vector that is not used nowadays because of problems in how it was … Read more
The only reason is to avoid clustering of values into a small number of buckets (yes, distribution). A more even distributed hashtable will perform more consistently. from http://srinvis.blogspot.com/2006/07/hash-table-lengths-and-prime-numbers.html If suppose your hashCode function results in the following hashCodes among others {x , 2x, 3x, 4x, 5x, 6x…}, then all these are going to be clustered … Read more
Your question seems to be well answered here but to summarise in relation to your specific question it might be better to think of it in reverse; “what happens to the BST solution time as the number of nodes goes up”? Essentially, in a BST every time you double the number of nodes you only … Read more
A balanced binary tree is the binary tree where the depth of the two subtrees of every node never differ by more than 1. A complete binary tree is a binary tree whose all levels except the last level are completely filled and all the leaves in the last level are all to the left … Read more
Modeling graph-like structures in Rust is not a simple problem. Here there are two valuable discussions from Nick Cameron and Niko Matsakis (two main Rust developers at Mozilla.) Graphs and arena allocation Modeling Graphs in Rust Using Vector Indices
In Computing Science terminology, a map is an associative container mapping from a key to a value. In other words, you can do operations like “for key K remember value V” and later “for key K get the value”. A map can be implemented in many ways – for example, with a (optionally balanced) binary … Read more
That really depends on your definition of “recent.” CLRS contains a great number of data structures, but by its very nature can’t have covered all of the great ideas and techniques that have been developed over the years. Here’s a sampler of areas of research and some of the results that have come from there: … Read more
Your quadtree structure isn’t optimal. You’re right to store 4 subtrees per node, but actual objects should only be stored inside the leaves, not inner nodes. Therefore the collection holding the actual objects needs to be moved to the leaves. Let’s have a look at the implementation of the operations: Insert an object into the … Read more