*/ public class JiuJiu { public static void main(String[] args) { fang();
System.out.println("======================================================================="); zSan();
System.out.println("======================================================================="); dSan();
System.out.println("======================================================================="); ddSan();
}
public static void fang() { //方形 System.out.println("方形"); for (int i = 1; i <= 9; i++) { for (int j = 1; j <= 9; j++) {
System.out.print(j + "*" + i + "=" + (i * j) + "\t");
}
System.out.println();
}
}
public static void zSan() { //正三角 System.out.println("正三角"); for (int i = 1; i <= 9; i++) { for (int j = 1; j <= i; j++) {
System.out.print(j + "*" + i + "=" + (i * j)+"\t" );
}
System.out.println();
}
}
public static void dSan() { //倒三角 System.out.println("倒三角"); for (int i = 1; i <= 9; i++) { for (int j = i; j <= 9; j++) {
System.out.print(j + "*" + i + "=" + (i * j) + "\t");
}
System.out.println();
}
}
public static void ddSan() { //倒倒三角 System.out.println("倒倒三角"); for (int i = 9; i >= 1; i--) { for (int j = 1; j <= i; j++) {
System.out.print(j + "*" + i + "=" + (i * j) + "\t");
}
System.out.println();
}
}
}/*三位数的水仙花数*/ public class NarcissisticNumber { public static void main(String[] args) { for (int i = 100; i <= 999; i++) { int num = i; int bai = num / 100; int shi = num / 10 % 10; int ge = num % 10; int res = bai * bai * bai + shi * shi * shi + ge * ge * ge; if (num == res) {
System.out.println(num + "是水仙花数");//153,370,371,407 }
}
}
}