Job offers
Companies
Tests
Blog
I'm an employer
Sign up
Log in
Group 2@2x
Created with Sketch.
Home
>
Users
>
Vincent Cotro
Vincent Cotro
Contribution
1965
Contributions
115508
Contributions played
Tests
44
Tests completed
525
Questions completed
Moderation
145
Questions
47
Ratings
Achievements
+2
Profile
Tests
Contributions
Profile
Tests
Contributions
Achievements
Submit a new question
or
see all questions
Easy
83
Medium
57
Hard
31
Expert
11
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
144
Not published
38
To review
0
Published
To review
Newest
Filters
Easy
83
Medium
57
Hard
31
Expert
11
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
144
Not published
38
To review
0
Cancel
144 questions
1
2
3
4
5
…
8
Medium
65 votes
2823 runs
4 comments
Understanding the differences between `map()` and `forEach()` methods in JavaScript
Web developer
at Jan 18, 2024
Easy
31 votes
2262 runs
0 comment
Write a SQL query to retrieve the list of employees with a salary greater than 5100.
Back-end developer
sql
select
where
at Mar 30, 2023
Easy
30 votes
1312 runs
1 comment
Write a Python function that returns the factorial of a number.
Back-end developer
recursion
at Mar 28, 2023
Easy
29 votes
2592 runs
3 comments
Write a JavaScript function that fetches data from an API and logs it to the console.
Web developer
promises
async
at Mar 28, 2023
Easy
23 votes
1429 runs
1 comment
Explain the difference between the `include` and `require` functions in PHP.
Back-end developer
functions
errors
at Mar 24, 2023
Easy
14 votes
2233 runs
0 comment
Select only distinct values in a column using SQL
Back-end developer
sql
distinct
at Mar 27, 2023
Easy
14 votes
2178 runs
1 comment
Update a column in an SQL table
Back-end developer
sql
update
at Nov 7, 2023
Easy
12 votes
2242 runs
0 comment
Write a SQL query to insert data into a table
Back-end developer
sql
insert
at Mar 27, 2023
Easy
12 votes
2222 runs
0 comment
Which SQL keyword is used to sort the result of a SELECT statement?
Back-end developer
sql
order by
at Mar 27, 2023
Medium
10 votes
2183 runs
4 comments
Write the SQL query to delete a column from a table
Back-end developer
sql
table
column
at Mar 27, 2023
Easy
10 votes
2129 runs
0 comment
Write a SQL query to retrieve the products with a price less than 1000 and sort the results in descending order of price.
Back-end developer
sql
order by
descending
at Mar 28, 2023
Easy
9 votes
988 runs
1 comment
Write a SQL query to retrieve the titles of books written by 'John Smith'.
Back-end developer
join
inner join
sql
at Sep 6, 2023
Easy
8 votes
907 runs
0 comment
Which of the following utility types makes all properties of a given type optional?
Web developer
typescript
types
at Mar 29, 2023
Medium
8 votes
484 runs
0 comment
What is the best practice to apply in your code to improve the performance of your application?
Back-end developer
performance
gzip
at Nov 15, 2023
Easy
7 votes
2210 runs
0 comment
How to delete an SQL table?
Back-end developer
sql
tables
at Mar 27, 2023
Easy
7 votes
1419 runs
0 comment
Write a React component that updates the document title with each click and resets to 'React App' when the component unmounts.
Web developer
react
hooks
useState
at Apr 5, 2023
Medium
6 votes
3078 runs
2 comments
Print the number of countries in the array travel.
Web developer
array
for loop
at Sep 5, 2022
Easy
6 votes
2112 runs
0 comment
Write a SQL query to calculate the total quantities sold for each product_id.
Back-end developer
sql
sum
group by
at Mar 28, 2023
Easy
6 votes
2071 runs
0 comment
Write a SQL query to get the total order amount for each customer.
Back-end developer
sql
sum
group by
at Mar 28, 2023
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Vincent Cotro
Easy
7 votes
779 runs
2 comments
What is the size of a long long in C++?
IT Architect
c++
memory
at Nov 3, 2023
Vincent Cotro
