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Matthieu Sanchez
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4 questions
Hard
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Count the number of matches of the RegEx `a*` in the sentence: `I went to my grandparent house`

Back-end developer
RegEx
string
Matthieu Sanchezat Feb 2, 2026
Medium
1 vote3 runs0 comment

Write a regular expression to match 'i{,4}' in a string

Back-end developer
RegEx
pattern
Matthieu Sanchezat Feb 2, 2026
Hard
0 vote10 runs0 comment

Choose the wrong statement :

IT Architect
OOP
inheritance
polymorphism
casting
Matthieu Sanchezat Feb 2, 2026
Waiting for validation
0 vote0 run0 comment

Data visualization aims to simplify understanding and make information more accessible.,Volume in Big Data refers to the massive amount of data generated by applications and processes.,Modern technologies make it possible to store and process data in parallel.

Data Scientist
data
big data
Matthieu Sanchezat Feb 26, 2026