Arrays and tuples in Julia

Faq.txt

Q1. What is the difference between an array and tuples?
ans: Arrays are mutables ordered collection of items whereas tuples are immutables ordered collection of items.

Q2. What is a Array constructor in julia?
ans: Array constructor is function which will help us to create an array of any size or dimension.

Q3.What is the use of splice!() function?
ans: Splice function can be use to remove and add elements in an array.

Q4.What are named tuples?
ans: These are tuples whose elements can be access by a name instead of a index.

Q5.Can an Array and a tuples can stores items of different data types?
ans: Yes an array and a tuples can store items of different data types.

Mcq.txt

Q1.What will be the output of this statement
     
     a4 = [1,2,"hi",3,4,5,4]# Put values starting at 2nd index
     splice!(a4, 2:1, [8,9])
     println(a4)
   
a) Error
b) [1,8,9,"hi",3,4,5,4]
c) [1, 8, 9, 2, "hi", 3, 4, 5, 4]
d) None of the above

ans: c)

Q2.What is the correct way to find the maximum elements in an array?

a) max array_name
b) array_name.max
c) max(array_name)
d) maximum(array_name)

ans: d)

Q3.what will be the output of this statement?

        a7 = [1 2 3; 4 5 6]
        println(a7[1,2:end])
        
a) [1 2 3]
b) [5 6]
c) [2 3] 
d) [4 5 6]

ans: d)

Q4.what will be the output of this statement
      
      t3=(a=(1,2,"A"),b=(3,"B","C"))
      println(t3.a)
      
a) Error
b) (1,2,"A")
c) (3,"B","C")
d) None of the above

ans: c)

Q5.What will be the output of this statement?

    a9 = collect(2:-1:5)
    println(a9)
    
a) [5 4 3 2 1]
b) error
c) []
d) [2 -1 -2 -3 -4]

ans: c)