MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Pass the value of the element you wish to remove from your array into the indexOf() method to return the index of the element that matches that value in the array. Then make use of the splice() method to remove the element at the returned index.

Detailed explanation-2: -Using unset() Function: The unset() function is used to remove element from the array. The unset function is used to destroy any other variable and same way use to delete any element of an array. This unset command takes the array key as input and removed that element from the array.

Detailed explanation-3: -The shift method can be used on an array to remove the first element of an array. If you have an array named arr it can be used in this way: arr.shift() . The shift method removes the first item of the array. It also returns the removed element.

Detailed explanation-4: -To delete a dynamic array, the delete or delete[] operator is used. It deallocates the memory from heap. The delete[] keyword deletes the array pointed by the given pointer. Therefore, to delete a dynamically allocated array, we use the delete[] operator.

Detailed explanation-5: -Deleting elements from ArrayList The deletion of an element in the ArrayList is straight forward. It requires one simple call to an inbuilt function. A call to the remove(i) function removes the element at index i. Deletion in ArrayLists is relatively easier as compared to Arrays.