class Solution { public: //Function to return a list of integers denoting spiral traversal of matrix. vector<int> spirallyTraverse(vector<vector<int> > matrix, int r, int c) { int l=0; int ri=c-1; int u=0; int d=r-1; vector<int>v; while(l<=ri && u<=d) { for(int i=l;i<=ri;i++) { v.push_back(matrix[u][i]); } u++; for(int i=u;i<=d;i++) { v.push_back(matrix[i][ri]); } ri--; if(u<=d) { for(int i=ri;i>=l;i--) { v.push_back(matrix[d][i]); } d--; } if(l<=ri) { for(int i=d;i>=u;i--) { v.push_back(matrix[i][l]); } l++; } } return v; } };