Arrays & Strings in programming

How are data items added to an array?

• Items are appended to the next free index

• In alphabetical order

• Whichever way you want

In names=["Mohamed","John","Arjun"] Index value 1 is?

• Mohamed

• John

• Arjun

To declare an array, you must use............

• brackets[ ]

• parenthesis()

• curly braces{ }

The location of an item in an array is called............

• element

• index

• value

Which code is used to add an item to a list?

• variable.add()

• variable.append()

• append.variable()

Which of the following are advantages of arrays?

• Easier to store elements of similar data type

• Elements stored in an array cannot be sorted

Which code is used to REMOVE an item to an array?

• pop()

• append()

• sort()

What will be the output of the following code ?

x=[“A”,”B”,”C”,”D”,”E”]

print(x.index(“D”))

• 1

• 2

• 3

--give the number of elements in an array .

Which of the following is the correct way to concatenate two strings

in Python?

• a) string1 .concat(string2)

• b) string1 + string2

• c) concat(string1, string2)

• d) string1.add(string2)