Question

Why is the len ( ) function useful when using a loop to iterate through a stack?
The len ( ) function will print the elements of the stack.
The len ( ) function will run with each iteration, printing the element number each time.
The len ( ) function will tell the program the number of elements in the stack.
The len ( ) function will remove the duplicate elements in the stack.

Answer 1

The len ( ) function will run with each iteration, printing the element number each time.

Answer 2

The len ( ) function useful when using a loop to iterate through a stack because the len ( ) function will tell the program the number of elements in the stack.

What is len ( ) function?

The len ( ) function is the function which gives back the number of characters as a output in a given text string. The len function gives back the zero when the string is empty with no text in it.

Let suppose a word "HELLO" is written on the string. Then the len function count the characters of this word and  gives back the result as 5.

This function is helpful when using a loop to iterate through a stack as there it describes the number of elements in the stack.

Thus, the len ( ) function useful when using a loop to iterate through a stack because the len ( ) function will tell the program the number of elements in the stack.

Learn more about the len ( ) function here;

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