DSA
monotonic deque
keeps a sorted window (sliding-window-max)
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Linked Lists Stacks and QueuesDSAMore terms from this board
- ADTabstract data type (interface, not storage)
- call stackthe CPU/OS stack of frames
- dequedouble-ended queue (O(1) both ends)
- head/tailfirst/last node
- interface vs implementationthe contract vs the swappable backing structure
- LIFO/FIFOlast-in-first-out / first-in-first-out
- linked listnodes + next pointers (non-contiguous)
- nodevalue + pointer(s)
- priority queuehighest-priority-first (→ heap, l.05)
- queueFIFO (enqueue/dequeue, O(1))
- ring / circular bufferarray with wrapping head+tail (O(1) dequeue)
- singly / doubly linkednext only / next+prev
- stackLIFO (push/pop/peek, all O(1))