Rotate Matrix

#include <bits/stdc++.h> 
#include <bits/stdc++.h> 

void rotateMatrix(vector<vector<int>> &mat, int n, int m)
{



    // int n = mat.size();
// int m = mat[0].size();
int row=n,col=m;
if(n==1||m==1)return;
int ur = 0, lr = n - 1, rc = m - 1, lc = 0;
int k=0;

while ((ur <= lr) and (lc <= rc))
{

    for (int i = lc; i <= rc and ((ur <= lr) and (lc <= rc)); i++)
    {
        //  ans.push_back(mat[ur][i]);
        swap(mat[k][k],mat[ur][i]);
    }
        ur++;

        for (int i = ur; i <= lr and ((ur <= lr) and (lc <= rc)); i++)
        {
            //    ans.push_back(mat[i][rc]);
            swap(mat[k][k],mat[i][rc]);
        }
        rc--;

        for (int i = rc; i >= lc and ((ur <= lr) and (lc <= rc)); i--)
        {
            //    ans.push_back(mat[lr][i]);
                        swap(mat[k][k],mat[lr][i]);

        }
        lr--;

        for (int i = lr; i >= ur and ((ur <= lr) and (lc <= rc)); i--)
        {
            //    ans.push_back(mat[i][lc]);
                        swap(mat[k][k],mat[i][lc]);

        }
        lc++;
        k++;
        row-=2;
        col-=2;
        if(row==1 || col==1)break;
    }

    return ;


}