You are given an m * n matrix, mat, and an integer k, which has its rows sorted in non-decreasing order. You are allowed to choose exactly 1 element from each row to form an array. Return the Kth smallest array sum among all possible arrays. Example…

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 = [ [ 1, 5…

题目: 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 = [ […

Find the kth smallest number in at row and column sorted matrix. Have you met this question in a real interview? Yes Example Given k = 4 and a matrix: [ [1 ,5 ,7], [3 ,7 ,8], [4 ,8 ,9], ] return 5 Challenge O(k log n), n is the maximal number in widt…

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 = [ [ 1, 5…

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 = [ [ 1, 5…

Find the kth smallest number in at row and column sorted matrix. Example Given k = 4 and a matrix: [ [1 ,5 ,7], [3 ,7 ,8], [4 ,8 ,9], ] return 5 Challenge KLog(Min(M,N,K))时间复杂度 K是因为要Poll K次并且同时insert K次,Min(M,N,K)是堆的size,insert的时间是Log(MIN(M,N,K)) 思路就…

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 = [ [ 1, 5…

题目: 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. Example: matrix = [ [ 1, 5, 9], [10, 11, 13], [12, 13, 15] ], k = 8, return 13. 分析:采用优先队列,自定义比较规则,使得最小元素排在队首. 代码:…

Question: 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…