Java uses for loop to output Yang Hui triangle

The idea is to create an integer two-dimensional array containing 10 one-dimensional arrays. Using a double-level loop, initialize the size of each second-level array in the outer loop. In the inner loop, the array elements on both sides are first assigned the value 1, the other values ​​are calculated through formulas, and then the array elements are output.

public class YanghuiTriangle {
    public static void main(String[] args) {
        int triangle[][]=new int[10][];// 创建二维数组
        // 遍历二维数组的第一层
        for (int i = 0; i < triangle.length; i++) {
            triangle[i]=new int[i+1];// 初始化第二层数组的大小
            // 遍历第二层数组
            for(int j=0;j<=i;j++){
                // 将两侧的数组元素赋值为1
                if(i==0||j==0||j==i){
                    triangle[i][j]=1;
                }else{// 其他数值通过公式计算
                    triangle[i][j]=triangle[i-1][j]+triangle[i-1][j-1];
                }
                System.out.print(triangle[i][j]+"\t");         // 输出数组元素
            }
            System.out.println();               //换行
        }
    }
}

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