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# Data Structures Test

The Data Structures Test assesses candidates’ knowledge of core data structures, OOPs fundamentals & proficiency in developing systems and applications using appropriate data structures.

Covered skills:

• Computer fundamentals
• Queues
• Stacks
• Trees
See all covered skills

9 reasons why
9 reasons why

Reason #1

## Tests for on-the-job skills

• 核心数据结构的知识，例如堆栈，队列，树，图，链接清单，哈希地图
• 了解oops基本面
• 熟练使用适当的数据结构开发系统和应用程序
• 具有各种排序算法的经验（气泡排序，合并排序，外壳排序等）

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.

Reason #3

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.

🧐 Question

Medium

Decryptor
Strings
Solve
`What does the following pseudo code print?`

Medium

Fibonacci codes
Time Complexity
Pseudo Code
Solve
`Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true?`
```A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same.
B: CODE 2 is more space-efficient than CODE 3.
C: CODE 3 is more space-efficient than CODE 2.
D: CODE 2 is more time-efficient than CODE 1.
E: CODE 3 is more time-efficient than CODE 1.```

Medium

Palindrome Test cases
Strings
Solve
`Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true?`
```Testcases
A: a
B: aba
C: aaa
D: aac```

Medium

Rewards Activities Order
Database Connection
Solve
```A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%.
The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts:```
```Script 1:
For users with reward <= 4000, set reward = reward * 1.02

Script 2:
For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04

Script 3:
For users with reward > 8000, set reward = reward * 1.06```
`Each script is to be executed separately. Which of the following options will update the rewards as expected:`
```A: Execute Script 1 followed by Script 2 followed by Script 3
B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout
C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout
D: Execute Script 3 followed by Script 2 followed by Script 1
E: Execute Script 2 followed by Script 3 followed by Script 1```
🧐 Question🔧 Skill

Medium

Decryptor
Strings
2 mins
Technical Aptitude
Solve

Medium

Fibonacci codes
Time Complexity
Pseudo Code
2 mins
Technical Aptitude
Solve

Medium

Palindrome Test cases
Strings
2 mins
Technical Aptitude
Solve

Medium

Rewards Activities Order
Database Connection
3 mins
Technical Aptitude
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Decryptor
Strings
Technical Aptitude
Medium2 mins
Solve
Fibonacci codes
Time Complexity
Pseudo Code
Technical Aptitude
Medium2 mins
Solve
Palindrome Test cases
Strings
Technical Aptitude
Medium2 mins
Solve
Rewards Activities Order
Database Connection
Technical Aptitude
Medium3 mins
Solve
Reason #4

## 1200+ customers in 75 countries

Brandon Lee, 人的负责人, Love, Bonito

Reason #5

## Designed for elimination, not selection

The most important thing while implementing the pre-employment Data Structures 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 Data Structures 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

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

### 关于软件工程师角色

####典型的软件工程师职责包括：

• 设计，开发和管理大量的低延迟软件程序
• 分析用户要求以告知应用程序设计
• 通过与其他开发团队，UX设计师，业务和系统分析师紧密合作来定义应用程序目标和功能
• 通过开发文档和协助工具来支持用户
• 实施质量保证程序

### What roles can I use the Data Structures Test for?

• Computer Programmer
• Software Engineer
• Software Developer
• Data Analyst
• Application Engineer
• Java Developer- Data Structure
• Python Developer- Data Structure
• Graph Engineer- Data Structure/ Algorithm
• Algorithms Specialist

### What topics are covered in the Data Structures Test?

Kasai的算法
LRU缓存

Strassen的矩阵乘法

BST中的订单统计数据

UKKONEN的后缀树

Gomory-Hu树

BFS vs DFS二进制树

avl树，张开树，B树，红黑树和K尺寸树

Deque

B+树

85%
reduction in screening time

## 常见问题解答

### 您是否有任何反交换或策略功能？

• 不可解决的问题
• IP策略
• Web Protoring
• 网络摄像头Proctoring
• 窃检测
• 安全浏览器

### 我刚刚搬到了一个付费计划。我如何要求自定义评估？

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