Array - Common Operations – Part 1

The video tutorial covers fundamental operations on arrays, including accessing, updating, and traversing elements. It explains the time complexity of these operations, emphasizing constant time for accessing and updating, and linear time for traversing. The tutorial highlights the importance of understanding these concepts for interviews and practical applications. It concludes with a brief overview of upcoming topics like searching, insertion, and deletion.

Which of the following is NOT one of the four common operations performed on arrays?

• Deleting an element

• Accessing a value

• Searching for an element

• Sorting the array

What is the time complexity of accessing an element at a specific index in an array?

• O(n^2)

• O(n)

• O(log n)

• O(1)

Why can accessing an element in an array be done in constant time?

• Because arrays are always small

• Because the system knows the memory address of each element

• Because arrays are sorted

• Because arrays are stored in a database

When updating an element in an array, what does the system primarily need to calculate?

• The memory address of the element

• The type of data stored in the array

• The size of the array

• The number of elements in the array

What is the time complexity of updating an element at a specific index in an array?

• O(n)

• O(log n)

• O(1)

• O(n^2)

What does traversing an array involve?

• Sorting the array

• Accessing a single element

• Deleting elements from the array

• Visiting each element in the array

What is the time complexity of traversing an array?

• O(1)

• O(log n)

• O(n)

• O(n^2)