int rows = matrix.length, cols = matrix[0].length; //use min heap, compare the value of the element in matrix Queue<Element> minHeap = new PriorityQueue<Element>(k, new Comparator<Element>(){ @Override public int compare(Element e1, Element e2){ return e1.val - e2.val; } }); /...
Kth Smallest Element in a Sorted Matrix Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example matrix = [ ...
题目描述: LeetCode 378. Kth Smallest Element in a Sorted Matrix Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted or
intkthSmallest(vector<vector<int>>& matrix,intk){ intleft = matrix[0][0], right = matrix.back().back(); while(left < right) { intmid = left + (right - left) /2, cnt =0; for(inti =0; i < matrix.size(); ++i) { cnt += upper_bound(matrix[i].begin(), matrix[i].end...
classSolution {public://二分一般有两种:1、按照下标进行二分,例如数组有序https://leetcode.com/problems/find-minimum-in-rotated-sorted-array///或者数组无序,要找满足条件的元素个数,以数组元素大小二分:https://leetcode.com/submissions/detail/134554396/intkthSmallest(vector<vector<int>>& matrix,int...
Given anxnmatrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: matrix = [ ...
(vector<vector<int>>&matrix,intk){intn=matrix.size();if(0==n)return0;// 二分法// 1,k越大,返回值应该越大:单调性:数组的行列都是单调递增的;// 2,正着求很麻烦,二分法鼓励你反着求,给一个x,猜它是否是第k大intb=matrix[0][0];inte=matrix[n-1][n-1];intans=0;while(b<=e){int...
https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/ 题目: n x n Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: matrix = [ [ 1, 5, 9], [10, 11, 13], [12, 13, 15] ], k = 8, return 13. ...
publicclassSolution{publicintkthSmallest(int[][]matrix,int k){if(matrix.length==0||matrix[0].length==0)return0;int[]index=newint[matrix.length];int pos=0;int small=matrix[matrix.length-1][matrix[0].length-1];;for(;k>0;k--){small=matrix[matrix.length-1][matrix[0].length-1];fo...
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: ...