data structures and algorithms coding interview questions

(20); Thequeue.insert (30); Thequeue.insert (40); Thequeue.remove (); Thequeue.remove (); Thequeue.remove (); Thequeue.insert (50); Thequeue.insert (60); Thequeue.insert (70); Thequeue.insert (80); while(!Thequeue.isempty ()) { Longn =Thequeue.remove (); System.out.print (n); // Max, Max, Max.System.out.print (""); } System.out.println (""); Priorityq THEPQ=NewPRIORITYQ (5); Thepq.insert (30); Thepq.insert (50); Thepq.insert (10); Thepq.insert (40); Thepq.insert

the average number of average months, the average of a particular week, and the averages of all weeks.Const MONTHDATA = function Monthdata () {//Initialize month data This.monthdata = (function () {Let arr = []; Let week = 4; Let day = 7; while (week--) {Arr[week] = []; while (day--) {Arr[week][day] = 0; } day = 7; } console.log (arr); return arr; })(); This.adddata = AddData; This.getmont

Data structure: The way in which it is arranged in the computer's storage space.Algorithms: Software programs manipulate the data processes of these structures.Data structure Type1. Arrays:Advantages: Fast insertion, direct subscript can be accessed quickly.Cons: Find slow, delete slow, fixed size.2. Ordered arrays:Pros: Faster than no need for array lookups.Cons: Delete and insert slow, fixed size.3. Stack

, and then delete the heap top element (the lowest value in the heap). The time complexity is O (* (n-k) *lg2k).Admittedly, the use of heaps to find the largest number of K performance is the best, but the benefits are not so little!! Let's imagine that if the input sequence is large, that is, the value of n is so large that it cannot be stored in memory, then the method one and method two are used, of course, the method can achieve the goal by using the merge sort, but how many Io is needed at

;next = NULL;return OK;}Advantages and disadvantages of single linked list and sequential table storage structure Storage mode Time performance Space performance Sequential storage Successive storage units are sequentially storedData Elements for linear tables Insertion: O (1)Insert and delete: Average moveThe length of the table is half the element, the timeis O (n) Easy Overflow Single linked list Use a set of ar

Python cookbook (data structures and algorithms) keeps the dictionary orderly. This example describes how to keep the dictionary in order by using Python. We will share this with you for your reference. The details are as follows: Problem:When creating a dictionary and performing iteration or serialization operations on the dictionary, you can also control the or

A table is an abstract definition of arraylist,linkedlist,stack,queue. I understand it as an ordered single data store.Use of the Remove method with the LinkedList classSimulates a scene, iterates over a linkedlist, and deletes the values stored in them as even numbers. Method One: Use subscript I for A For loop, if found to be an even number, and then remove (i) to delete. The time complexity of this method is O (N2), because the complexity

at a time until an empty slot is found and the key is stored in that position. For example, the hash value of the conflict is H, followed by the order of H+1, h+2, h+3 ...To prevent aggregation (clustering), the skip slots method can be used.(ii) quadratic probing (square probe): that is, the conflicting hash value is H, then the next lookup is h+1, followed by h+4,h+9,h+16 ...(2) Chaining (linked list method): All elements of the same hash value are saved in a linked list. However, the more el

Java data structures and algorithms (iii) -- simple sorting Data alone is not enough. Data presentation often needs to be arranged in a certain order. The higher the requirement, the more complicated the sorting. This article only introduces three simple sorting types. 1) B

observers, that is, dependent objects, each time data changes, these 2 view will changeclassHexviewer (object):defUpdate (self, subject):Print 'hexviewer:subject%s has data 0x%x'%(Subject.name, Subject.data)classDecimalviewer (object):defUpdate (self, subject):Print 'decimalviewer:subject%s has data%d'%(Subject.name, Subject.data)if __name__=='__main__': Data1=

detection and re-hashing;2), Di = 12,-12,22,-22,32,..., ±k2 (K≤M/2), called two-time detection and re-hashing;3), Di = pseudo-random number sequence, called pseudo-random detection re-hash.(2), re-hash methodhi = RHI (key) i =,..., kRHI are different hash functions.(3), Chain address methodStores all the data elements of a synonym in the same linear list. Assuming that the hash address produced by a hash function is on the interval [0,m-1], a pointer

Data structures and algorithms (C # implementation) series --- tree (1) Heavenkiller (original) First, let's define the tree: A tree is a finite, non-empty node set, T = {r} or T1 or T2 or... Or Tn It has the following properties: 1. the node r specified in the set is called the root node of the tree. 2. The remaining nodes can be divided into n subsets, T1, T2 ,

from its previous element, execute a[count]=a[i],count++;Question 16: How to find the second largest number in an array.Method 1: Sort all the elements and the second largest number in the second positionMethod 2: Use two variables to record the first and second largest number, for the maximum initial value of the primary element, the second largest number is initialized to the smallest negative numbers. Each time the current element is compared with the maximum value, if it is greater than the

Algorithm Figure Search (breadth first, depth first) depth first is especially important Sort Dynamic planning Matching algorithm and network flow algorithm Regular expressions and string matching Data Figure (tree is particularly important) Map Heap Stack/queue Tries | Dictionary Tree Additional recommendations Greedy algorithm Probability method Approximate algorithm Algorithm: Three-way di

Today we will talk about how to calculate the complexity of time.The concept of Time complexity: (Baidu version)The same problem can be solved by different algorithms, and the quality of an algorithm will affect the efficiency of the algorithm and even the program.The purpose of the algorithm analysis is to select the suitable algorithm and the improved algorithm.In computer science, the time complexity of the algorithm is a function, which quantitati

var arraynumber: [Int] = [2,4, 6, 7, 3, 8, 1]Bubble sortfunc Maopao (var array: [int]), [int] { for var i = 0; i count; i++ { for var j = I;j count; j + + {if array[j] > array[j +1] {var temp = Array[j]ARRAY[J] = array[j+1]array[j+1] = Temp}}}return Array} Let array2 =maopao([2,4, 6, 7, 3, 8, 9 , 5])Cond... Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. Swift sorting algorithms and

Huashan Big BroSort by: Topological sorting algorithmDictionary ordering algorithmProgramming Zhu Ji Nanxiong: Ordering by bitmapTree: Red and Black tree summaryB + Tree and b* Tree SummaryB-Tree Summary SummaryBalanced binary tree (AVL tree) Summarytrie--Dictionary TreeGraph traversal: Depth-first traversal and breadth-first traversalMinimum spanning tree: minimum spanning tree-prim algorithm and Kruskal algorithmShortest path: Shortest path-dijkstra algorithm and Floyd algorithmCommon classica

Data structures and algorithms (C # implementation) series-demonstration (II) Heavenkiller (original) Public static void ShowGeneralTree_travel () { IEnumerator tmpIEnum; Tree. TraversalType travelType = 0; // --------------------- Prompt ---------------------------- Console. WriteLine ("please choose a No. of a item you want to travel :"); Console. WriteLine ("

Data structures and algorithms (C # implementation) series --- tree (2) Heavenkiller (original) Public class InOrder: IPrePostVisitor { Private IVisitor visitor; Public InOrder (IVisitor _ vis) {visitor = _ vis ;} # Region IPrePostVisitor Member Public void PreVisit (object _ obj) { // TODO: Add InOrder. PreVisit implementation } Public void Visit (object _ ob

Data structures and algorithms (C # implementation) series --- generalized tree (II) Heavenkiller (original) Public override object Key {get {return this. key ;}} Public override uint Degree {get {return this. degree ;}} // Public override uint Height {get {return this. height ;}} Public override bool IsEmpty () // property takes the place of IsEmpty () {Return