Answered

Which string method counts the number of characters in a string?

AThe count() function
BThe index() function
CThe replace() function
DThe len() function

Which of the following lines of code would slice all of the characters before index 6 and then stride through every other character in the slice?

Astring_var[:6:2]
Bstring_var[6::1]
Cstring_var[6::2]
Dstring_var[:6:1]

What would you expect to happen in response to the code string_var[3:5]?

AA substring will be sliced from index 3 through index 4.
BA substring will be sliced from index 0 through 5.
CThe substring will be sliced from index 3 through the end of the string, and then it will stride through the string.
DA slice will be created using the characters before index 3 and then it will stride with the stride number 5.

Which list method returns an element at a specific index and then deletes that element from the list?

AThe pop() function
BThe remove() function
CThe append() function
DThe replace() function

Verified Answer :

rsmith6559

1) len() would do the trick, but it's not a method of the String class, it's a function that returns the number of items in a container.
2) A. string_var[:6:2]
3) I'd expect to see the 4th and 5th characters of the string. Strings are zero indexed. None of the choices is correct.
4) A. The pop() function

fichoh

Functions, methods are used in programming in other to make desired execution. The solution to the questions posed are given thus :

1.)

The len() function, counts the number of individual values in a string, list or table. Hence, the required function is len().

2.)

List slicing is used to select a certain portion of a string or table.

The required code will be string_var[:6:2]

  • This can be interpreted as everything before index 6 ; then take a stride of 2 though every other character in the slice.

3.)

string_var[3:5] ; Here, 3 represents the starting position, while 5 means up to but not including the index 5. Hence, the correct option is A.

4.)

The pop function is used to return an element from a particular list while also simultaneously deleting the element.

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