Untitled

class Solution {
public:
    vector<int> spiralOrder(vector<vector<int>>& ma) {
        int row=ma.size(), col=ma[0].size();
        int top=0,bot=row-1 ,left=0, right=col-1;
        vector<int> res;

        while(top<=bot && left<=right){
            for(int i=left;i<=right;i++){
                res.push_back(ma[top][i]);
            }
            top++;

            for(int i=top;i<=bot;i++){
                res.push_back(ma[i][right]);
            }
            right--;

            if(top<=bot){ //for single rows
                for(int i=right;i>=left;i--){
                    res.push_back(ma[bot][i]);
                }
                bot--;
            }

            if(left<=right){
                for(int i=bot;i>=top;i--){
                    res.push_back(ma[i][left]);
                }
                left++;
            }
        }
        return res;
    }
};