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Spiral_Traversal
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Spiral_Traversal
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vector<int> spirallyTraverse(vector<vector<int> > matrix, int r, int c)
{
int left=0,right=c-1,top=0,bottom=r-1;
int direction=1;
vector<int>v;
while(left<=right && top<=bottom)
{
if(direction==1)
{
for(int i=left;i<=right;i++)
v.push_back(matrix[top][i]);
direction=2;
top++;
}
else if(direction==2)
{
for(int i=top;i<=bottom;i++)
v.push_back(matrix[i][right]);
direction=3;
right--;
}
else if(direction==3)
{
for(int i=right;i>=left;i--)
v.push_back(matrix[bottom][i]);
direction=4;
bottom--;
}
else if(direction==4)
{
for(int i=bottom;i>=top;i--)
v.push_back(matrix[i][left]);
direction=1;
left++;
}
}
return v;
}