[Leetcode]Pascal's Triangle II
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//similar with the last one.
class Solution {
public:vector<int> getRow(int rowIndex) {
vector<int> result;
vector<int> last;
result.push_back(1);
if(rowIndex==0)
return result;
result.push_back(1);
if(rowIndex==1)
return result;
for(int i=2;i<=rowIndex;i++)
{
last=result;
result.clear();
for(int j=1;j<=i+1;j++)
{
if(j==1||j==i+1)
result.push_back(1);
else
result.push_back(last[j-1]+last[j-2]);
}
}
return result;
}
};
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