LeetCode – Sparse Matrix Multiplication (Java)

Given two sparse matrices A and B, return the result of AB. You may assume that A’s column number is equal to B’s row number. 1. Naive Method We can implement Sum(A_ik * B_kj) -> C_ij as a naive solution. public int[][] multiply(int[][] A, int[][] B) { //validity check   int[][] C = new int[A.length][B[0].length]; … Read more