Why you should use Data Structures Test?

The Datakonstruktioner Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Evne til at implementere og arbejde med array -datastrukturer Kendskab til LinkedList -datastruktur og dens operationer Kendskab til implementering og anvendelse af stakdatastrukturen Forståelse af kødatastruktur og dens applikationer Fortrolighed med trædatastruktur og forskellige gennemgangsteknikker Kendskab til grafdatastruktur og almindelige algoritmer som Dijkstra's og BFS Forståelse og anvendelse af hashing til løsning af problemer med datastruktur Færdigheder i forskellige sorteringsalgoritmer og deres tidskompleksiteter Kendskab til søgning af algoritmer som binær søgning og deres optimeringer Forståelse og anvendelse af rekursion til løsning af problemer

Data Structures Test

Q: What topics are covered in the Data Structures Test?

Array LinkedList Stak Kø Træ Kurve Hashing Sortering Søger Rekursion

About the test:

Datakonstruktionstest evaluerer en kandidats forståelse af grundlæggende datastrukturer såsom arrays, sammenkoblede lister, stabler, køer, træer og grafer. Den vurderer deres viden om forskellige datastrukturer operationer, algoritmer og problemløsningsevner. Testen inkluderer spørgsmål med flere valg til vurdering af teoretisk viden og kodning af spørgsmål for at evaluere praktisk implementering.

Covered skills:

Array
Stak
Træ
Hashing
Søger

LinkedList
Kø
Kurve
Sortering
Rekursion

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9 reasons why

Adaface Data Structures Assessment Test is the most accurate way to shortlist Software ingeniørs

Reason #1

Tests for on-the-job skills

The Data Structures Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Evne til at implementere og manipulere arrays effektivt
Forståelse og implementering af tilknyttede lister
Færdighed i stakoperationer og koncepter
Evne til at håndtere køoperationer og forstå dens principper
Fortrolighed med trædatastrukturer og dens gennemgangsteknikker
Kendskab til grafdatastruktur og dens algoritmer
Forståelse af hashing -teknikker og dens applikationer
Færdighed i sorteringsalgoritmer og deres tidskompleksiteter
Kendskab til søgningsteknikker og deres implementeringer
Forståelse og anvendelse af rekursion i problemløsning

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Dette er kun en lille prøve fra vores bibliotek med 10.000+ spørgsmål. De faktiske spørgsmål om dette Datakonstruktioner Test vil være ikke-gåbart.

🧐 Question
Hard Graph Traversal and Data Storage Graph Theory Algorithm Analysis	Try practice test
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
Medium Implementing a Browser's Back Button Stack Data Handling	Try practice test
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
Easy Linked List Element Removal Linked Lists Element Removal	Try practice test
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Hard Graph Traversal and Data Storage Graph Theory Algorithm Analysis	3 mins Data Structures	Try practice test
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
	Medium Implementing a Browser's Back Button Stack Data Handling	2 mins Data Structures	Try practice test
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
	Easy Linked List Element Removal Linked Lists Element Removal	2 mins Data Structures	Try practice test
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Graph Traversal and Data Storage Graph Theory Algorithm Analysis	Data Structures	Hard	3 mins	Try practice test
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
	Implementing a Browser's Back Button Stack Data Handling	Data Structures	Medium	2 mins	Try practice test
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
	Linked List Element Removal Linked Lists Element Removal	Data Structures	Easy	2 mins	Try practice test
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

Med Adaface var vi i stand til at optimere vores indledende screeningsproces med op mod 75 %, hvilket frigjorde kostbar tid for både ansættelsesledere og vores talentanskaffelsesteam!

Brandon Lee, Leder af mennesker, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Datakonstruktioner Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Datakonstruktioner Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

Learn more

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About the Data Structures Online Test

Why you should use Pre-employment Data Structures Test?

The Datakonstruktioner Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Evne til at implementere og arbejde med array -datastrukturer
Kendskab til LinkedList -datastruktur og dens operationer
Kendskab til implementering og anvendelse af stakdatastrukturen
Forståelse af kødatastruktur og dens applikationer
Fortrolighed med trædatastruktur og forskellige gennemgangsteknikker
Kendskab til grafdatastruktur og almindelige algoritmer som Dijkstra's og BFS
Forståelse og anvendelse af hashing til løsning af problemer med datastruktur
Færdigheder i forskellige sorteringsalgoritmer og deres tidskompleksiteter
Kendskab til søgning af algoritmer som binær søgning og deres optimeringer
Forståelse og anvendelse af rekursion til løsning af problemer

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Data Structures Test?

linkedList
LinkedList er en datastruktur Det består af en række noder, der hver indeholder et element og en henvisning til den næste knude. Det giver effektiv indsættelse og deletionsoperationer i sammenligning med arrays. Denne færdighed vurderes for at måle kandidatens forståelse af dynamisk hukommelsesallokering og deres evne til at implementere og bruge linkede lister til forskellige applikationer.
stack
Stack er en abstrakt datatype, der følger den Last-in-First-Out (LIFO) -princip. Det understøtter to primære operationer: Push, der tilføjer et element til toppen af stakken og POP, der fjerner det øverste element. Denne færdighed testes for at vurdere kandidatens viden om stakbaserede algoritmer og deres evne til at implementere stakbaserede løsninger til problemer.
kø
Kø er en abstrakt datatype, der følger Første-i-første-ud-ud (FIFO) -princip. Det understøtter to primære operationer: Enqueue, der tilføjer et element til slutningen af køen, og Dequeue, der fjerner det frontmeste element. Denne færdighed måles i testen for at evaluere kandidatens fortrolighed med købaserede algoritmer og deres færdigheder i implementering af købaserede løsninger til forskellige problemer.
træ
træ er en hierarkiske data Struktur bestående af knudepunkter forbundet med kanter. Det har en enkelt rodnode og kan have et varierende antal børnesknudepunkter. Evnen til at arbejde med træer vurderes i denne test for at evaluere kandidatens evne til at forstå og implementere træbaserede algoritmer som traversals, søgning og afbalancering.
graf
Graf er en Ikke-lineær datastruktur sammensat af et sæt knudepunkter (vertices) og et sæt kanter, der forbinder disse knudepunkter. Det bruges til at repræsentere forhold mellem objekter og enheder. Testning af evnen til at arbejde med grafer hjælper med at måle kandidaternes forståelse af grafalgoritmer som gennemgang, korteste sti og forbindelse En unik indeksværdi ved hjælp af en hash -funktion. Det giver mulighed for effektiv hentning og opbevaring af data ved at minimere søgningstiden. Denne færdighed måles i testen for at evaluere kandidatens evne til at implementere og bruge hash-baserede datastrukturer, såsom hash-tabeller og hash-kort.
sortering
Sortering er processen med Arrangering af elementer i en bestemt rækkefølge, såsom stigende eller faldende. Det er en vigtig færdighed at vurdere, da sorteringsalgoritmer er grundlæggende for forskellige applikationer. Evaluering af kandidatens færdigheder i sorteringsalgoritmer hjælper med at bestemme deres evne til effektivt at organisere data.
søgning
Søgning er processen med at finde et bestemt element (er) i en given indsamling af data. Det er afgørende for indhentning af oplysninger og beslutningstagning. At vurdere kandidatens dygtighed til at søge algoritmer hjælper med at identificere deres evne til at lokalisere og hente data effektivt på tværs af forskellige datastrukturer.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Datakonstruktioner Test to be based on.
Array -indsættelse
Array -sletning
Array -søgning
Array -sortering
Oprettelse af sammenkoblet liste
Linkede liste over gennemgang
Linkede listeindsættelse
Linkede listeletion
Stakdrift
Køoperationer
Binært træoprettelse
Binært træ gennemgang
Binært træindsættelse
Binært træets sletning
Grafrepræsentation
Graf gennem gennemgang
Graf korteste sti
Grafcyklusdetektion
Hashing -teknikker
Hash fungerer
Hash -bordoperationer
Boble sortering
Valg af sortering
Indsættelsessortering
Flet sortering
Hurtig sortering
Binær søgning
Lineær søgning
Binær søgning træ skabelse
Binær søgning træ gennemgang
Binært søgningstræindsættelse
Binær søgningstræ -deletion
Grundlæggende om rekursion
Rekursive algoritmer
Rekursive datastrukturer
Rekursiv backtracking

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What roles can I use the Data Structures Test for?

Software ingeniør
Dataanalytiker
Web-udvikler
Software tester
Computer programmør
It Freshers

How is the Data Structures Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Evne til at designe og implementere effektive algoritmer med givne krav
Kendskab til kompleksitetsanalyse og evne til at optimere kode til ydeevne
Færdighed i implementering af datastrukturer ved hjælp af objektorienterede principper
Forståelse af hukommelsesstyringsteknikker og effektiv hukommelsesforbrug
Fortrolighed med forskellige typer træer som binære søgningstræer og AVL -træer
Kendskab til grafalgoritmer som topologisk sortering og minimumsspændingstræer
Evne til at håndtere store datasæt og effektivt behandle data effektivt
Forståelse og anvendelse af dynamisk programmering i problemløsning
Kendskab til at bruge forskellige datastrukturer til at løse problemer i den virkelige verden
Kendskab til afvejninger mellem forskellige datastrukturer og deres brugssager

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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Ansættelseslederne mente, at de gennem de tekniske spørgsmål, som de stillede under panelinterviewene, var i stand til at fortælle, hvilke kandidater der havde bedre score og differentieret med dem, der ikke scorede så godt. De er meget tilfreds med kvaliteten af de kandidater, der er nomineret med Adaface-screeningen.

85%

Reduktion i screeningstid

Se den fulde casestudie

Data Structures Hiring Test Ofte stillede spørgsmål

Kan jeg kombinere flere færdigheder i en brugerdefineret vurdering?

Ja absolut. Brugerdefinerede vurderinger er oprettet baseret på din jobbeskrivelse og vil omfatte spørgsmål om alle must-have-færdigheder, du angiver.

Har du nogen anti-cheating eller proctoring-funktioner på plads?

Vi har følgende anti-cheating-funktioner på plads:

Ikke-gåbare spørgsmål
IP Proctoring
Webproctoring
Webcam Proctoring
Detektion af plagiering
Sikker browser

Læs mere om Proctoring Features.

Hvordan fortolker jeg testresultater?

Den primære ting at huske på er, at en vurdering er et elimineringsværktøj, ikke et udvælgelsesværktøj. En færdighedsvurdering er optimeret for at hjælpe dig med at eliminere kandidater, der ikke er teknisk kvalificerede til rollen, den er ikke optimeret til at hjælpe dig med at finde den bedste kandidat til rollen. Så den ideelle måde at bruge en vurdering på er at beslutte en tærskelværdi (typisk 55%, vi hjælper dig med benchmark) og inviterer alle kandidater, der scorer over tærsklen for de næste interviewrunder.

Hvilken oplevelsesniveau kan jeg bruge denne test til?

Hver Adaface -vurdering tilpasses til din jobbeskrivelse/ ideel kandidatperson (vores emneeksperter vælger de rigtige spørgsmål til din vurdering fra vores bibliotek på 10000+ spørgsmål). Denne vurdering kan tilpasses til ethvert erfaringsniveau.

Får hver kandidat de samme spørgsmål?

Ja, det gør det meget lettere for dig at sammenligne kandidater. Valgmuligheder for MCQ -spørgsmål og rækkefølgen af spørgsmål randomiseres. Vi har anti-cheating/proctoring funktioner på plads. I vores virksomhedsplan har vi også muligheden for at oprette flere versioner af den samme vurdering med spørgsmål om lignende vanskelighedsniveauer.