HackerRank Ruby Array – Deletion problem solution

In this HackerRank Ruby Array – Deletion problem solution 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 using syntax as explained above.

Problem solution.

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

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

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

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