arrays

Library "arrays"
Library contains utility functions using arrays.

delete( arr , index)
  remove an item from array at specific index. Also deletes the item
  Parameters:
    arr: - array from which the item needs to be deleted
    index: - index of item to be deleted
  Returns: void

pop( arr )
  remove the last item from array. Also deletes the item
  Parameters:
    arr: - array from which the last item needs to be removed and deleted
  Returns: void

shift( arr )
  remove an item from array at index 0. Also deletes the item
  Parameters:
    arr: - array from which the first item needs to be removed and deleted
  Returns: void

unshift( arr , val, maxItems)
  add an item to the beginning of an array with max items cap
  Parameters:
    arr: - array to which the item needs to be added at the beginning
    val: - value of item which needs to be added
    maxItems: - max items array can hold. After that, items are removed from the other end
  Returns: resulting array

clear( arr )
  remove and delete all items in an array
  Parameters:
    arr: - array which needs to be cleared
  Returns: void

push( arr , val, maxItems)
  add an item to the end of an array with max items cap
  Parameters:
    arr: - array to which the item needs to be added at the beginning
    val: - value of item which needs to be added
    maxItems: - max items array can hold. After that, items are removed from the starting index
  Returns: resulting array