3 releases (breaking)
| 0.3.0 | Jun 25, 2024 |
|---|---|
| 0.2.0 | Jun 25, 2024 |
| 0.1.0 | Jun 22, 2024 |
#16 in #priority-queue
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Indexed Priority Queue
An indexed priority queue with index-based removals, restores and value updates.
About
A priority queue datastructure with the following operations:
| Operation | Time Complexity | Description |
|---|---|---|
push(Index, Value) |
O(log n) |
Inserts an index-value pair into the queue. |
pop() -> Option<Index> |
O(log n) |
Removes and returns the index with the smallest value from the priority queue. |
remove(Index) |
O(log n) |
Deletes the given index from the priority queue. |
restore(Index) |
O(log n) |
Reinserts a previously removed index into the priority queue with its last associated value. |
min() -> Option<Index> |
O(1) |
Retrieves the index with the smallest value without removing it from the priority queue. |
get(Index) -> Value |
O(1) |
Returns the value associated with the given index. Panics if the index is not present. |
update_dyn(Index) -> &mut Value |
O(log n) |
Modifies the value associated with the given index. |
update_up(Index) -> &mut Value |
O(log n) |
Increases the value associated with the given index. More efficient than update_dyn. |
update_down(Index) -> &mut Value |
O(log n) |
Decreases the value associated with the given index. More efficient than update_dyn. |
Examples
There are examples available at: https://github.com/binary-banter/indexed_priority_queue/tree/main/examples