:type key: int :rtype: None

:rtype: None

:type num: int :rtype: None

:rtype: int

:type key: int :rtype: None

Add the number to an internal data structure.. :type number: int :rtype: None

:type index: int :type snap_id: int :rtype: int

Returns the value to which the specified key is mapped, or -1 if this map contains no mapping for the key :type key: int :rty

:type value: int :rtype: None

:type a: int :type b: int :rtype: int

:type a: int :type b: int :rtype: int

:type key: str :type val: int :rtype: None

Removes the element from in front of queue and returns that element. :rtype: int

Checks whether the circular queue is empty or not. :rtype: bool

:rtype: None

:rtype: int

:type input: str :rtype: List[int]

Returns whether the stack is empty. */

Find if there exists any pair of numbers which sum is equal to the value. :type value: int :rtype: bool

:type key: int :rtype: int

Provide a number which is not assigned to anyone. @return - Return an available number. Return -1 if none is available. :rtyp

Removes the element on top of the stack and returns that element. :rtype: int

Removes the element on top of the stack and returns that element. */

value will always be non-negative. :type key: int :type value: int :rtype: None

Recycle or release a number. :type number: int :rtype: None

:type x: int :rtype: int

:type head: ListNode :rtype: ListNode

:type nums: List[int] :rtype: int

:type nums: List[int] :rtype: int

:type s: str :rtype: bool

:type nums: List[int] :rtype: TreeNode

:type n: int :rtype: List[str]

:rtype: bool

Inserts a word into the trie. :type word: str :rtype: None

Inserts a word into the trie. :type word: str :rtype: None

Checks whether the circular queue is full or not. :rtype: bool