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public class test { public static void main(String[] args){ for (int i=1;i<=9;i++){ for (int j=1;j<=9;j++){ String a=" "; if(j-i==1&&i<=3){ a=" "; } if(j-i==2&&i<=2){ a=" "; } if(j-i==3&&i<=2){ a=" "; } if(j-i>=3&&i==1){ a=" "; } if (i>j){ continue; }else if (j==9){ System.out.println(a+i+"X"+j+"="+i*j+";"); }else{ System.out.print(a+i+"X"+j+"="+i*j+";"); } } } } }
结果:
1X1=1; 1X2=2; 1X3=3; 1X4=4; 1X5=5; 1X6=6; 1X7=7; 1X8=8; 1X9=9; 2X2=4; 2X3=6; 2X4=8; 2X5=10; 2X6=12; 2X7=14; 2X8=16; 2X9=18; 3X3=9; 3X4=12; 3X5=15; 3X6=18; 3X7=21; 3X8=24; 3X9=27; 4X4=16; 4X5=20; 4X6=24; 4X7=28; 4X8=32; 4X9=36; 5X5=25; 5X6=30; 5X7=35; 5X8=40; 5X9=45; 6X6=36; 6X7=42; 6X8=48; 6X9=54; 7X7=49; 7X8=56; 7X9=63; 8X8=64; 8X9=72; 9X9=81;