Question

What is the pseudocode for the array delete function?

1) Delete the element at the specified index and shift all the elements after it to the left.
2) Delete the element at the specified index and shift all the elements after it to the right.
3) Delete the element at the specified index and shift all the elements before it to the left.
4)elete the element at the specified index and shift all the elements before it to the right.

Answer 1

Pseudocode for deleting an element from an array involves shifting all elements after the specified index to the left and then reducing the array size.

Step-by-step explanation:

The pseudocode for deleting an element from an array at a specified index typically involves shifting all elements after the specified index one position to the left. This effectively overwrites the element that is intended to be deleted. Here's an example of such a pseudocode:

FUNCTION deleteElement(ARRAY, INDEX)
IF INDEX is valid for ARRAY
FOR i FROM INDEX TO sizeof(ARRAY) - 2
ARRAY[i] = ARRAY[i + 1]
END FOR
REDUCE size of ARRAY by 1
ELSE
OUTPUT "Invalid index!"
END IF
END FUNCTION

This pseudocode checks if the given INDEX is valid, and if so, shifts elements to the left starting from the specified INDEX to the second-to-last index, effectively removing the element. Notice the size of the array is reduced to account for the deleted element, maintaining the integrity of the array.