- Difficulty: Hard
- Tags: LeetCode, Hard, Array, Binary Search, Sorting, Line Sweep, Heap (Priority Queue), leetcode-1851, Sort, O(nlogn + klogk + klogn), O(n + k), Heap
Problem
You are given a 2D integer array intervals
, where intervals[i] = [lefti, righti]
describes the ith
interval starting at lefti
and ending at righti
(inclusive). The size of an interval is defined as the number of integers it contains, or more formally righti - lefti + 1
.
You are also given an integer array queries
. The answer to the jth
query is the size of the smallest interval i
such that lefti <= queries[j] <= righti
. If no such interval exists, the answer is -1
.
Return an array containing the answers to the queries.
Example 1:
Input: intervals = [[1,4],[2,4],[3,6],[4,4]], queries = [2,3,4,5] Output: [3,3,1,4] Explanation: The queries are processed as follows: - Query = 2: The interval [2,4] is the smallest interval containing 2. The answer is 4 - 2 + 1 = 3. - Query = 3: The interval [2,4] is the smallest interval containing 3. The answer is 4 - 2 + 1 = 3. - Query = 4: The interval [4,4] is the smallest interval containing 4. The answer is 4 - 4 + 1 = 1. - Query = 5: The interval [3,6] is the smallest interval containing 5. The answer is 6 - 3 + 1 = 4.
Example 2:
Input: intervals = [[2,3],[2,5],[1,8],[20,25]], queries = [2,19,5,22] Output: [2,-1,4,6] Explanation: The queries are processed as follows: - Query = 2: The interval [2,3] is the smallest interval containing 2. The answer is 3 - 2 + 1 = 2. - Query = 19: None of the intervals contain 19. The answer is -1. - Query = 5: The interval [2,5] is the smallest interval containing 5. The answer is 5 - 2 + 1 = 4. - Query = 22: The interval [20,25] is the smallest interval containing 22. The answer is 25 - 20 + 1 = 6.
Constraints:
1 <= intervals.length <= 105
1 <= queries.length <= 105
intervals[i].length == 2
1 <= lefti <= righti <= 107
1 <= queries[j] <= 107