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
