42 Exam Rank 03 -

| Exercise | Difficulty | Data Structure | Recursion Required? | |----------|------------|----------------|----------------------| | ft_list_size | Easy | Singly linked list | No (iterative) | | ft_list_push_back | Easy | Singly linked list | No | | ft_list_last | Easy | Singly linked list | No | | ft_list_foreach | Easy | Singly linked list | No | | ft_list_remove_if | Medium | Singly linked list | No | | ft_list_reverse | Medium | Singly linked list | No | | ft_list_sort | Medium-Hard | Singly linked list | Optional | | ft_list_merge | Medium | Singly linked list | No | | ft_itoa_base | Medium | String (no struct) | No (but tricky) | | ft_atoi_base | Medium | String (no struct) | No | | ft_split_whitespaces | Easy | String → array | No | | ft_range | Easy | Array | No | | ft_ultimate_range | Easy | Array | No | | ft_strjoin | Easy | String | No | | ft_btree_create_node | Easy | Binary tree | No | | ft_btree_apply_prefix | Medium | Binary tree | Yes | | ft_btree_apply_infix | Medium | Binary tree | Yes | | ft_btree_apply_suffix | Medium | Binary tree | Yes | | ft_btree_insert_data | Hard | Binary tree | Yes | | ft_btree_search_item | Medium | Binary tree | Yes | | ft_btree_level_count | Medium | Binary tree | Yes | | ft_btree_apply_by_level | Hard | Binary tree | Yes (with queue) | When you start Rank 03:

if (!node) return (ft_btree_create_node(item)); if (cmp(item, node->item) < 0) node->left = insert(node->left, item, cmp); else node->right = insert(node->right, item, cmp); return (node);

// add to end

int max(int a, int b) return (a > b ? a : b); int ft_btree_level_count(t_btree *root)

You need a pointer to pointer begin_list because the head may change. 3. ft_itoa_base (Classic tricky one) char *ft_itoa_base(int value, int base) 42 Exam Rank 03

Forgetting that base can be 2, 8, 10, 16, but not 1 or >16 per subject. Also, value can be negative only for base 10. 4. ft_btree_insert_data (Hard) void ft_btree_insert_data(t_btree **root, void *item, int (*cmpf)())

5 / \ 3 8 / \ \ 1 4 9 Trace ft_btree_apply_infix (left-root-right). Write the output before running code. Give yourself 20 minutes per exercise. If you exceed, look at the solution, understand it, then redo from scratch. 4. Understand the typedefs typedef struct s_list | Exercise | Difficulty | Data Structure |

t_btree *node; struct s_queue *next; t_queue; void enqueue(t_queue **q, t_btree *node)

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