标签：inpu amp int out i++ integer def lis air
You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k.
Define a pair (u,v) which consists of one element from the first array and one element from the second array.
Find the k pairs (u1,v1),(u2,v2) ...(uk,vk) with the smallest sums.
Example 1:
Input: nums1 = [1,7,11], nums2 = [2,4,6], k = 3 Output: [[1,2],[1,4],[1,6]] Explanation: The first 3 pairs are returned from the sequence: [1,2],[1,4],[1,6],[7,2],[7,4],[11,2],[7,6],[11,4],[11,6]
class Solution { public List<List<Integer>> kSmallestPairs(int[] nums1, int[] nums2, int k) { List<List<Integer>> res = new ArrayList<>(); if (nums1.length == 0 || nums2.length == 0 || k == 0) { return res; } PriorityQueue<int[]> pq = new PriorityQueue<>((a, b) -> a[0] + a[1] - b[0] - b[1]); for (int i = 0; i < nums1.length && i < k; i++) { pq.offer(new int[]{nums1[i], nums2[0], 0}); } while (!pq.isEmpty() && k-- > 0) { int[] cur = pq.poll(); res.add(Arrays.asList(cur[0], cur[1])); if (cur[2] == nums2.length - 1) { continue; } pq.offer(new int[]{cur[0], nums2[cur[2] + 1], cur[2] + 1}); } return res; } }
[LC] 373. Find K Pairs with Smallest Sums
标签：inpu amp int out i++ integer def lis air
原文地址：https://www.cnblogs.com/xuanlu/p/12303037.html
