法一:: public class Li1 { public static void main(String[] args) { int i,j; for(i=1;i<=9;i++) { for(j=1;j<=i;j++) { System.out.print(i+""+j+"="+ij+" "); } System.out.println(); } } }
法二:: for(int i=1,j=1;j<=9;){ if(i<j){ i++; j=1; System.out.println(""); }else{ System.out.print(j+""+i+"="+ij+" “); if(i*j<10){ System.out.print(” "); } j++; } }