Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space?A straight forward solution using O(mn) space is probably a bad idea.A simple improvement uses O…
1.7 Write an algorithm such that if an element in an MxN matrix is 0, its entire row and column are set to 0. LeetCode中的原题,请参见我之前的博客Set Matrix Zeroes 矩阵赋零.…
Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in-place. Example 1: Input: [ [1,1,1], [1,0,1], [1,1,1] ] Output: [ [1,0,1], [0,0,0], [1,0,1] ] Example 2: Input: [ [0,1,2,0], [3,4,5,2], [1,3,1,5]…
Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space?A straight forward solution using O(m n) space is probably a bad idea.A simple improvement uses…
给定一个 m x n 的矩阵,如果一个元素为 0 ,则将这个元素所在的行和列都置零.你有没有使用额外的空间?使用 O(mn) 的空间不是一个好的解决方案.使用 O(m + n) 的空间有所改善,但仍不是最好的解决方案.你能设计一个使用恒定空间的解决方案吗?详见:https://leetcode.com/problems/set-matrix-zeroes/description/ Java实现: class Solution { public void setZeroes(int[][] mat…
Set Matrix ZeroesGiven a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up:Did you use extra space?A straight forward solution using O(mn) space is probably a bad idea.A simple im…
Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space?A straight forward solution using O(mn) space is probably a bad idea.A simple improvement uses O…
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example,Given the following matrix: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] You should return [1,2,3,6,9,8,7,4,5]. 这道题让我们将一个矩阵按照螺旋顺序打印出来,我们…
