A queue using two stacks (head and tail), the head stack keeps the elements in a queue order, it means ready to dequeue or print the top

lets us use descriptive names for day of the week

create an instance for hotel apartment

create an instance for hotel room

using enum here so that we can use descriptive month names instead of numbers 0, 1, ... 11 when accessing array of days per month

Link list node */

Defining the structure

Defining the structure of the node created

LOGIC: =================================================================================================== 1. We maintain two variables `surplus`, `de

Definition for singly-linked list. public class ListNode { int val; ListNode next; ListNode(int x) { val = x; } }

time complexity -O(n),space complexity -O(1)*/

AUTHOR: github.com/Sanjay235 LOGIC: ========================================================================================== 1. As the set of interv

* Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * };

AUTHOR: github.com/Sanjay235 LOGIC: ================================================================================================ 1. For every leve

Sort by k in ascending order so that people with 0 people ahead are first (a.second > b.second) If both have same k then make sure Larger Height is ah

Definition for a binary tree node. public class TreeNode { int val; TreeNode left; TreeNode right; TreeNode() {} TreeNode(int val)

* Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode() : val(0), l

* Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode() : val(0), next(nullptr) {} * L

time complexity-O(n*2^n) , space complexity(n*2^n)*/ 1-total number of subsets will be-(2^n)(where n is array size) 2-upper bound of a k bit number wi