分析

按照题意模拟过程

C++ 代码

class Solution {
public:
    vector<vector<int>> ans;
    vector<int> temp;
    vector<vector<int>> matrixReshape(vector<vector<int>>& nums, int r, int c) {
        int n=nums.size(),m=nums[0].size();
        if(n*m!=r*c) return nums;
        for(auto row:nums)
        {
            for(auto x:row)
            {
                temp.push_back(x);
                if(temp.size()==c)
                {
                    ans.push_back(temp);
                    temp.clear();
                }
            }
        }
        return ans;
    }
};