PHP interview questions part 13
PHP interview questions part 13
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. The length of a list is ______ to the number of components in that list.
Correct Answer is : 1
2. Which function can be used to determine the names assigned to a list?
Correct Answer is : 1
3. Joining two lists can be achieved either using the _________ function.
Correct Answer is : b is executeda is executedb is executed
4. Which function gives the list as output?
Correct Answer is : 5 + 10 = 20
5. Density function gives output as ________
Correct Answer is : Original Value is 15
6. Locator function gives output as ___________
Correct Answer is : Returned value from the function : 30
7. The _________ function returns a list of densities (y) corresponding to bin values (x).
Correct Answer is : HelloWorld
8. _________ is new package that makes it easy to “tidy” your data.
Correct Answer is : this worksthis too works
9. Which of the following is complementary to tidyr ?
Correct Answer is : 4
10. How many functions exist for tidying the data ?
Correct Answer is : I am awesome!!
11. Which of the following function takes multiple columns ?
Correct Answer is : o’malley wins the heavyweight championship!
12. __________ uses regex groups instead of a splitting pattern or position.
Correct Answer is : Salad is good
13. Which of the following function works similar to separate() ?
Correct Answer is : Hello
14. Which of the following d takes two columns and spreads them in to multiple columns ?
Correct Answer is : I Love My Country
15. Spread function is known as ___________ in spreadsheets.
Correct Answer is : welcome to India
16. __________ is used when you have variables that form rows instead of columns.
Correct Answer is : Hello World!
17. Which of the following merges two variables into one ?
Correct Answer is : What does \”yolo\” mean?
18. How many functions exist for wrangling the data with dplyr package ?
Correct Answer is : Array ( [0] => Hello [1] => world. [2] => It’s [3] => a [4] => beautiful [5] => day. )
19. ________ function is similar to the existing subset() function in R
Correct Answer is : Hello World
20. The ______ operator allows you to string operations in a left-to-right fashion
Correct Answer is : 7
