deque2 ❗️[LEET CODE] 641. Design Circular Deque # Problem Design your implementation of the circular double-ended queue (deque). Your implementation should support following operations: MyCircularDeque(k): Constructor, set the size of the deque to be k. insertFront(): Adds an item at the front of Deque. Return true if the operation is successful. insertLast(): Adds an item at the rear of Deque. Return true if the operation is successful. dele.. 2021. 3. 31. [LEET CODE] 225. Implement Stack using Queues # Problem Implement a last in first out (LIFO) stack using only two queues. The implemented stack should support all the functions of a normal queue (push, top, pop, and empty). Implement the MyStack class: void push(int x) Pushes element x to the top of the stack. int pop() Removes the element on the top of the stack and returns it. int top() Returns the element on the top of the stack. boolean.. 2021. 3. 26. 이전 1 다음 반응형
