Elyses Enchantments
Level 1
10 Points
Instructions
As a magician-to-be, Elyse needs to practice some basics. She has a stack of cards that she wants to manipulate.
To make things a bit easier she only uses the cards 1 to 10 so her stack of cards can be represented by an internal table of numbers. The position of a certain card corresponds to the table row. That means row 1 refers to the first card, row 2 to the second card etc.
1. Retrieve a card from a stack
To pick a card, return the card at index position from
the given stack.
data(stack) = value #( ( 1 ) ( 2 ) ( 4 ) ( 1 ) ).
data(card) = get_Item( stack = stack
position = 3 ). " card = 42. Exchange a card in the stack
Perform some sleight of hand and exchange the card at index position
with the replacement card provided.
Return the adjusted stack.
data(stack) = value #( ( 1 ) ( 2 ) ( 4 ) ( 1 ) ).
data(new_Stack) = set_Item( stack = stack
position = 3
replacement = 6 ).
" new_Stack = 1, 2, 6, 13. Insert a card at the top of the stack
Make a card appear by inserting a new card at the top of the stack. Return the adjusted stack.
data(stack) = value #( ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = insert_Item_at_Top( stack = stack
new_Card = 8 ).
" new_Stack = 5, 9, 7, 1, 84. Remove a card from the stack
Make a card disappear by removing the card at the given position from the stack.
Return the adjusted stack.
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(new_Stack) = remove_Item( stack = stack
position = 3 ).
" new_Stack = 3, 2, 4, 85. Remove the top card from the stack
Make a card disappear by removing the card at the top of the stack. Return the adjusted stack.
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(new_Stack) = remove_Item_from_Top( stack ).
" new_Stack = 3, 2, 6, 46. Insert a card at the bottom of the stack
Make a card appear by inserting a new card at the bottom of the stack. Return the adjusted stack.
data(stack) = value #( ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = insert_Item_at_Bottom( stack = stack
new_Card = 8 ).
" new_Stack = 8, 5, 9, 7, 17. Remove a card from the bottom of the stack
Make a card disappear by removing the card at the bottom of the stack. Return the adjusted stack.
data(stack) = value #( ( 8 ) ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = remove_Item_from_Top( stack ).
" new_Stack = 5, 9, 7, 18. Check the size of the stack
Return the size of the stack (number of rows).
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(size_of_Stack) = get_Size_of_Stack( stack ).
" size_of_Stack = 5Elyses Enchantments
Level 1
10 Points
Instructions
As a magician-to-be, Elyse needs to practice some basics. She has a stack of cards that she wants to manipulate.
To make things a bit easier she only uses the cards 1 to 10 so her stack of cards can be represented by an internal table of numbers. The position of a certain card corresponds to the table row. That means row 1 refers to the first card, row 2 to the second card etc.
1. Retrieve a card from a stack
To pick a card, return the card at index position from
the given stack.
data(stack) = value #( ( 1 ) ( 2 ) ( 4 ) ( 1 ) ).
data(card) = get_Item( stack = stack
position = 3 ). " card = 42. Exchange a card in the stack
Perform some sleight of hand and exchange the card at index position
with the replacement card provided.
Return the adjusted stack.
data(stack) = value #( ( 1 ) ( 2 ) ( 4 ) ( 1 ) ).
data(new_Stack) = set_Item( stack = stack
position = 3
replacement = 6 ).
" new_Stack = 1, 2, 6, 13. Insert a card at the top of the stack
Make a card appear by inserting a new card at the top of the stack. Return the adjusted stack.
data(stack) = value #( ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = insert_Item_at_Top( stack = stack
new_Card = 8 ).
" new_Stack = 5, 9, 7, 1, 84. Remove a card from the stack
Make a card disappear by removing the card at the given position from the stack.
Return the adjusted stack.
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(new_Stack) = remove_Item( stack = stack
position = 3 ).
" new_Stack = 3, 2, 4, 85. Remove the top card from the stack
Make a card disappear by removing the card at the top of the stack. Return the adjusted stack.
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(new_Stack) = remove_Item_from_Top( stack ).
" new_Stack = 3, 2, 6, 46. Insert a card at the bottom of the stack
Make a card appear by inserting a new card at the bottom of the stack. Return the adjusted stack.
data(stack) = value #( ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = insert_Item_at_Bottom( stack = stack
new_Card = 8 ).
" new_Stack = 8, 5, 9, 7, 17. Remove a card from the bottom of the stack
Make a card disappear by removing the card at the bottom of the stack. Return the adjusted stack.
data(stack) = value #( ( 8 ) ( 5 ) ( 9 ) ( 7 ) ( 1 ) ).
data(new_Stack) = remove_Item_from_Top( stack ).
" new_Stack = 5, 9, 7, 18. Check the size of the stack
Return the size of the stack (number of rows).
data(stack) = value #( ( 3 ) ( 2 ) ( 6 ) ( 4 ) ( 8 ) ).
data(size_of_Stack) = get_Size_of_Stack( stack ).
" size_of_Stack = 5