初始解法:采用双层for循环,直接遍历数组,时间复杂度是O(row * col) bool Find(int target, vector< vector<int> > array) { if(array.size() == 0) return false; if(array[0].size() == 0) return false; int row = 0, col = n-1; for(int row = 0 ; row < array.size(); ++row ) ...