Package g1801_1900.s1847_closest_room

Class Solution

java.lang.Object
g1801_1900.s1847_closest_room.Solution
public class Solution extends java.lang.Object
1847 - Closest Room.

Hard

There is a hotel with n rooms. The rooms are represented by a 2D integer array rooms where rooms[i] = [roomIdi, sizei] denotes that there is a room with room number roomIdi and size equal to sizei. Each roomIdi is guaranteed to be unique.

You are also given k queries in a 2D array queries where queries[j] = [preferredj, minSizej]. The answer to the jth query is the room number id of a room such that:

  • The room has a size of at least minSizej, and
  • abs(id - preferredj) is minimized , where abs(x) is the absolute value of x.

If there is a tie in the absolute difference, then use the room with the smallest such id. If there is no such room , the answer is -1.

Return an array answer of length k where answer[j] contains the answer to the jth query.

Example 1:

Input: rooms = [[2,2],[1,2],[3,2]], queries = [[3,1],[3,3],[5,2]]

Output: [3,-1,3]

Explanation: The answers to the queries are as follows:

Query = [3,1]: Room number 3 is the closest as abs(3 - 3) = 0, and its size of 2 is at least 1. The answer is 3.

Query = [3,3]: There are no rooms with a size of at least 3, so the answer is -1.

Query = [5,2]: Room number 3 is the closest as abs(3 - 5) = 2, and its size of 2 is at least 2. The answer is 3.

Example 2:

Input: rooms = [[1,4],[2,3],[3,5],[4,1],[5,2]], queries = [[2,3],[2,4],[2,5]]

Output: [2,1,3]

Explanation: The answers to the queries are as follows:

Query = [2,3]: Room number 2 is the closest as abs(2 - 2) = 0, and its size of 3 is at least 3. The answer is 2.

Query = [2,4]: Room numbers 1 and 3 both have sizes of at least 4. The answer is 1 since it is smaller.

Query = [2,5]: Room number 3 is the only room with a size of at least 5. The answer is 3.

Constraints:

  • n == rooms.length
  • 1 <= n <= 105
  • k == queries.length
  • 1 <= k <= 104
  • 1 <= roomIdi, preferredj <= 107
  • 1 <= sizei, minSizej <= 107

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int[]
    closestRoom(int[][] rooms, int[][] queries)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • closestRoom

      public int[] closestRoom(int[][] rooms, int[][] queries)