Ruby Array – Deletion Solution

In this post, we will solve Ruby Array – Deletion HackerRank Solution. This problem (Ruby Array – Deletion) is a part of HackerRank Ruby series.

Task

The array class has various methods of removing elements from the array.

Let’s look at the array

 arr = [5, 6, 5, 4, 3, 1, 2, 5, 4, 3, 3, 3] 

• Delete an element from the end of the array

 > arr.pop
 => 3

• Delete an element from the beginning of the array

 > arr.shift
 => 5

• Delete an element at a given position

 > arr.delete_at(2)
 => 4

• Delete all occurrences of a given element

 > arr.delete(5)
 => 5
 > arr
 => [6, 3, 1, 2, 4, 3, 3]

Your task is to complete the functions below using syntax as explained above.

Solution – Ruby Array – Deletion

def end_arr_delete(arr)
    # delete the element from the end of the array and return the deleted element
    arr.pop
end

def start_arr_delete(arr)
    # delete the element at the beginning of the array and return the deleted element
    arr.shift
end

def delete_at_arr(arr, index)
    # delete the element at the position #index
  arr.delete_at(index)
end

def delete_all(arr, val)
    # delete all the elements of the array where element = val
  arr.delete(val)
end

Note: This problem (Ruby Array – Deletion) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.