test online iOS (Swift)

About the test:

The iOS Online Test uses scenario-based MCQs to evaluate candidates on their proficiency in developing iOS mobile applications, including their knowledge of Swift programming language, UIKit, Core Data, Auto Layout, memory management, and debugging. The test includes a coding question to evaluate hands-on programming skills and aims to assess a candidate's ability to design and develop iOS mobile applications that adhere to industry best practices and standards.

Covered skills:

Objective-C
Error handling and debugging
File Structure

Swift
Views and controllers

See all covered skills

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9 reasons why

Adaface test online iOS (Swift) is the most accurate way to shortlist iOS Developers

Reason #1

Tests for on-the-job skills

Il test di valutazione online iOS (SWIFT) è progettato e validato da esperti del settore per aiutare i reclutatori tecnologici e i responsabili delle assunzioni a valutare le capacità di programmazione iOS del candidato. Le migliori aziende tecnologiche utilizzano il nostro test di programmazione iOS per ridurre il tempo di screening dei candidati dell'85%.

Il test garantisce che i candidati abbiano seguenti tratti:

Capacità di scrivere codice iOS riutilizzabile
Capacità di progettare e creare applicazioni avanzate per la piattaforma iOS
Competenza in Swift/ Obiettivo C con una buona conoscenza dei suoi ecosistemi
Esperienza di lavoro con API RESTful per connettersi ai servizi di back-end
capacità di progettazione dell'interfaccia utente di prim'ordine
Esperienza nell'integrazione di più fonti di dati e database

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.

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 ->

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.

Questi sono solo un piccolo campione della nostra biblioteca di oltre 10.000 domande. Le domande reali su questo iOS Online Test sarà non googleabile.

🧐 Question
Medium Completion Handlers Views Animations	Solve
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
Medium UI Responder Chain UI Views Interaction.	Solve
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
Medium ViewController Buggy Code	Solve
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
Medium Data Provider DispatchQueue Closures Asychronous operations.	Solve
Consider the following code snippet: What will be printed after the code execution?
Medium Property Observers OOPs	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
Medium Class Destructor OOPs	Solve
What does the following Swift code output?
Easy Defer blocks	Solve
What does the following Swift code output?
Easy Lazy Variables	Solve
What does the following Swift code output?
Easy Registration Queue Logic	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 Longest Road logic hashmaps	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
Medium Visitors Count Strings	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
	Medium Completion Handlers Views Animations	2 mins iOS	Solve
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
	Medium UI Responder Chain UI Views Interaction.	3 mins iOS	Solve
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
	Medium ViewController Buggy Code	3 mins iOS	Solve
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
	Medium Data Provider DispatchQueue Closures Asychronous operations.	3 mins Swift	Solve
Consider the following code snippet: What will be printed after the code execution?
	Medium Property Observers OOPs	2 mins Swift	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
	Medium Class Destructor OOPs	2 mins Swift	Solve
What does the following Swift code output?
	Easy Defer blocks	2 mins Swift	Solve
What does the following Swift code output?
	Easy Lazy Variables	2 mins Swift	Solve
What does the following Swift code output?
	Easy Registration Queue Logic	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 Longest Road logic hashmaps	25 mins Coding	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
	Medium Visitors Count Strings	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
	Completion Handlers Views Animations	iOS	Medium	2 mins	Solve
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
	UI Responder Chain UI Views Interaction.	iOS	Medium	3 mins	Solve
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
	ViewController Buggy Code	iOS	Medium	3 mins	Solve
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
	Data Provider DispatchQueue Closures Asychronous operations.	Swift	Medium	3 mins	Solve
Consider the following code snippet: What will be printed after the code execution?
	Property Observers OOPs	Swift	Medium	2 mins	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
	Class Destructor OOPs	Swift	Medium	2 mins	Solve
What does the following Swift code output?
	Defer blocks	Swift	Easy	2 mins	Solve
What does the following Swift code output?
	Lazy Variables	Swift	Easy	2 mins	Solve
What does the following Swift code output?
	Registration Queue Logic	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
	Longest Road logic hashmaps	Coding	Medium	25 mins	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
	Visitors Count Strings	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

Con Adaface, siamo stati in grado di ottimizzare il nostro processo di screening iniziale di oltre il 75%, liberando un tempo prezioso sia per i responsabili delle assunzioni che per il nostro team di acquisizione di talenti!

Brandon Lee, Capo delle persone, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment iOS Online 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.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the iOS Online 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 & comparative results

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

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Informazioni su iOS (Swift) Developer Job Roles

IOS è un sistema operativo mobile creato e sviluppato da Apple Inc. esclusivamente per il suo hardware. È il sistema operativo che attualmente alimenta molti dei dispositivi mobili dell'azienda, tra cui iPhone e iPod Touch; Ha anche alimentato l'iPad prima dell'introduzione di iPados nel 2019.

Uno sviluppatore iOS crea, test e perfeziona le applicazioni per i dispositivi mobili che utilizzano il sistema operativo iOS di Apple che sono coerenti con gli obiettivi e gli standard della loro azienda o cliente. Gli sviluppatori iOS programmano più comunemente in Swift e Objective-C. SWIFT è un linguaggio di codifica compilato per uso generale rilasciato da Apple nel 2014. Offre una migliore sicurezza, sicurezza e prestazioni di Tipo di Objective-C.

Le responsabilità tipiche di uno sviluppatore iOS includono:

Progettare e costruire applicazioni mobili per la piattaforma iOS di Apple
Garantire la qualità e le prestazioni dell'applicazione alle specifiche
Collaborare con una squadra per definire, progettare e spedire nuove funzionalità
Scopri, valuta e implementa continuamente nuove tecnologie per massimizzare l'efficienza dello sviluppo
Correzione di bug dell'applicazione prima della versione finale
Applicazione di pubblicazione sull'App Store
Lavora sulla fissazione dei bug e sul miglioramento delle prestazioni dell'applicazione

Il test è progettato per proiettare i candidati per ruoli come:

sviluppatore junior iOS - Swift
Sviluppatore iOS intermedio - Swift
sviluppatore iOS senior - Swift
sviluppatore junior iOS - Obiettivo C
Sviluppatore iOS intermedio - Obiettivo C
Sviluppatore iOS senior - Obiettivo C
Sviluppatore mobile
Swift Developer
Objective C Developer

What roles can I use the iOS Online Test for?

iOS Developer
Swift Developer
Objective C Developer
Mobile Developer

What topics are covered in the test online iOS (Swift)?

Swift

Gestione degli errori e debug

Viste e controller

Struttura di file

Condizionali

Per i loop

Programmazione orientata agli oggetti

Variabili

Funzioni

Opzioni

stringhe

Array, dizionari e set

Swift enumerations

Nozioni di base iOS

Valore e tipi di riferimento

Concorrenza

File system

Strutture rapide

Consapevolezza della posizione

Protocolli, opzioni, proprietà, percorsi chiave

Gestione della memoria

Dichiarazioni ed espressioni

Networking

Parametri rapidi

Http

Grand Central Dispatch (GCD)

Chiusure

Grafica

Classi e oggetti rapidi

Magazzinaggio

Uikit

RIPOSO

Gestione degli errori e debug

Linee guida per l'interfaccia umana

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I responsabili delle assunzioni hanno ritenuto che attraverso le domande tecniche che hanno posto durante le interviste del panel, sono stati in grado di dire quali candidati avevano punteggi migliori e si sono differenziati con coloro che non hanno segnato. Sono molto soddisfatto Con la qualità dei candidati selezionati con la proiezione di Adaface.

85%

Riduzione del tempo di screening

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FAQ

Posso combinare più competenze in una valutazione personalizzata?

Si assolutamente. Le valutazioni personalizzate sono impostate in base alla descrizione del tuo lavoro e includeranno domande su tutte le competenze indispensabili che specificate.

Hai in atto delle caratteristiche anti-cheat o procuratore?

Abbiamo in atto le seguenti caratteristiche anti-cheat:

Domande non googiche
Proctoring IP
procuratore web
Proctor di webcam
Rilevamento del plagio
Sicuro browser

Leggi di più sulle caratteristiche di procuratore.

Come interpreto i punteggi dei test?

La cosa principale da tenere a mente è che una valutazione è uno strumento di eliminazione, non uno strumento di selezione. Una valutazione delle competenze è ottimizzata per aiutarti a eliminare i candidati che non sono tecnicamente qualificati per il ruolo, non è ottimizzato per aiutarti a trovare il miglior candidato per il ruolo. Quindi il modo ideale per utilizzare una valutazione è decidere un punteggio di soglia (in genere il 55%, ti aiutiamo a benchmark) e invitiamo tutti i candidati che segnano al di sopra della soglia per i prossimi round di intervista.

Per quale livello di esperienza posso usare questo test?

Ogni valutazione di Adaface è personalizzata per la descrizione del tuo lavoro/ personaggio del candidato ideale (i nostri esperti in materia sceglieranno le domande giuste per la tua valutazione dalla nostra biblioteca di oltre 10000 domande). Questa valutazione può essere personalizzata per qualsiasi livello di esperienza.

Ogni candidato riceve le stesse domande?

Sì, ti rende molto più facile confrontare i candidati. Le opzioni per le domande MCQ e l'ordine delle domande sono randomizzate. Abbiamo anti-cheatri/procuratore in atto. Nel nostro piano aziendale, abbiamo anche la possibilità di creare più versioni della stessa valutazione con questioni di difficoltà simili.