0118_Pascal's_Triangle.cpp

class Solution {
public:
    vector<vector<int>> generate(int numRows) {
        std::vector<std::vector<int>> triangle;
    
        for (int i = 0; i < numRows; i++) {
            std::vector<int> row(i + 1, 1);  
            for (int j = 1; j < i; j++) {
                row[j] = triangle[i - 1][j - 1] + triangle[i - 1][j];
            }
            
            triangle.push_back(row);
        }
        
        return triangle;
    }
};