打印三角形:
public class FunctionDemo01 { public static void main(String[] args) { getResult(4); } public static void getResult(int row){ for (int x = 0; x < row; x++) { for (int y = 0; y < x+1; y++) { System.out.print("*"); } System.out.println(); } } }
打印矩形:
public class FunctionDemo01 { public static void main(String[] args) { getResult(4,5); } public static void getResult(int row,int col){ for (int x = 0; x < row; x++) { for (int y = 0; y < col; y++) { System.out.print("*"); } System.out.println(); } } }
九九乘法表:
public class FunctionDemo01 { public static void main(String[] args) { getResult(9); } public static void getResult(int row){ for (int x = 1; x <= row; x++) { //1*1=1 //1*2=2 2*2=4 //1*3=3 2*3=6 3*3=9 for (int y = 1; y <= x; y++) { System.out.print(y+"*"+x+"="+x*y+" "); } System.out.println(); } } }