java通过传参打印杨辉三角等腰

public class YH {



    public  void yangHuiTriangle(int s){
       /* System.out.println("请输入行数：");
        Scanner sc = new Scanner(System.in);
        s=sc.nextInt();*/

       //创建二维数组
        int triangle[][] = new int[s][];
        //遍历二维数组的第一层
        for(int i=0;i<triangle.length;i++){
            //初始化第二层数组的大小
            triangle[i] = new int[i+1];

            //打印正三角n行要满足每一行比上一行少一个*
            int num=triangle.length-i;
            for(int z=0;z<num;z++){

                System.out.print("*");

            }
            //遍历第二层数组
            for(int j=0;j<triangle[i].length;j++){
                //两层的数组元素复制为1
                if (i==0||j==0||j==triangle[i].length-1){
                    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]+" ");

            }
            System.out.println();
        }
    }

    public static void main(String[] args) {
        YH yh = new YH();
        yh.yangHuiTriangle(10);
    }

}

运行结果如下：

/usr/dev/java/jdk1.8.0_131/bin/java -javaagent:/usr/dev/idea2018/idea-IU-181.5281.24/lib/idea_rt.jar=40129:/usr/dev/idea2018/idea-IU-181.5281.24/bin -Dfile.encoding=UTF-8 -classpath /usr/dev/java/jdk1.8.0_131/jre/lib/charsets.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/deploy.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/cldrdata.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/dnsns.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/jaccess.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/jfxrt.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/localedata.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/nashorn.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/sunec.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/sunjce_provider.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/sunpkcs11.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/ext/zipfs.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/javaws.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/jce.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/jfr.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/jfxswt.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/jsse.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/management-agent.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/plugin.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/resources.jar:/usr/dev/java/jdk1.8.0_131/jre/lib/rt.jar:/home/leyou04/IdeaProjects/testClass/out/production/testClass com.YH
**********1 
*********1 1 
********1 2 1 
*******1 3 3 1 
******1 4 6 4 1 
*****1 5 10 10 5 1 
****1 6 15 20 15 6 1 
***1 7 21 35 35 21 7 1 
**1 8 28 56 70 56 28 8 1 
*1 9 36 84 126 126 84 36 9 1 

Process finished with exit code 0