Leetcode: Sparse Matrix Multiplication
70ms solution: use one HashTable: 160 ms The idea is derived from a CMU lecture. A sparse matrix can be represented as a sequence ...
原文：leetcode 1337. The K Weakest Rows in a Matrix
Given am nmatrixmatofones representing soldiers andzeros representing civilians , return the indexes of thekweakest rows in the matrix ordered from the weakest to the strongest. A rowiis weaker than r ...
2020-02-12 23:01 0 650 推荐指数：
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