[Array] Pascal's Triangle
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Given numRows, generate the first numRows of Pascal’s triangle.
For example, given numRows = 5,
Return
[
[1],
[1,1],
[1,2,1],
[1,3,3,1],
[1,4,6,4,1]
]
方法:正常模拟即可。
class Solution {public: vector<vector<int>> generate(int numRows) { vector<vector<int>> res(numRows); for(int i=0;i<numRows;i++){ res[i].resize(i+1); res[i][0]=res[i][i]=1; for(int j=1;j<i;j++) res[i][j]=res[i-1][j-1]+res[i-1][j]; } return res; }};
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