# Data Structures and Algorithms Online Test

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The Data Structures and Algorithms online test assesses knowledge of software data structures and algorithms.

The assessment includes work-sample tasks, such as:

• Analyzing binary tree traversals.
• Understanding recursive algorithms.
• Determining worst-case time complexity of algorithms.

A good software engineer should know when and how to use proper data structures and algorithms to make optimized code that works when the amount of data that needs to be processed increases.

## Sample public questions

Easy
3 min
mmcq
Public
Data Structures & Algorithms
Algorithmic Thinking
Complexity

For the following pseudocode functions, choose the big O notation that accurately describes its worst-case complexity.

Hard
5 min
mca
Public
Data Structures & Algorithms
Recursion
Tree Traversal

The function below is used to search for an element in a binary tree that contains linked nodes.

``````function treeContains(treeNode : Node, element : int) : bool
if (treeNode == NULL)
return false
else if (treeNode.getValue() == element)
return true
else
left : bool = treeContains(treeNode.getLeft(), element)
right : bool = treeContains(treeNode.getRight(), element)
return left || right
end if
end function``````

What can be said about the treeContains function?

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Earn a free certificate by achieving top 25% on the Data Structures and Algorithms test with public questions.

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Sunshine Caprio

Java and SQL
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### Skills and topics tested

• Data Structures & Algorithms
• Algorithmic Thinking
• Complexity
• Recursion
• Tree Traversal
• Binary Search

### For job roles

• Back-End Developer
• Full-Stack Developer
• Software Developer
• Web Developer
• Web Front-End Developer

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