import java.util.Scanner;public class Test { public static void test1() { int m = 0; for (int i = 1; i <= 200; i++) { if (i % 3 == 0) { System.out.print(i + " "); m++; } } System.out.println("1-200之内总共有" + m + "个能被 3整队的数"); } public static void test2() { int m = 0; int j = 0; for (int i = 2; i <= 100; i++) { for (j = 2; j <= i; j++) { if (i % j == 0) break; } if (j >= i) { System.out.print(i + " "); m++; } } System.out.println("*********" + m + "个"); } public static void test3() { int a, b, c, d; for (a = 100; a < 1000; a++) { b = a / 100; c = a % 100 / 10; d = a % 10; if (a == b * b * b + c * c * c + d * d * d) { System.out.println(a); } } } public static void test4() { Scanner s = new Scanner(System.in); System.out.println("请输入行数"); int temp = s.nextInt(); int i, j, k; for (i = 1; i <= temp / 2 + 1; i++) {// 上部分 for (j = 1; j <= temp / 2 + 1 - i; j++) // 前半段打空格 System.out.print(" "); for (k = 1; k <= 2 * i - 1; k++) // 打"*" System.out.print("*"); System.out.println(""); } for (i = 1; i <= temp - (temp / 2 + 1); i++) {// 下部分 for (j = 1; j <= i; j++) System.out.print(" "); for (k = 1; k <= temp - 2 * i; k++) System.out.print("*"); System.out.println(""); } } public static void test5() { Scanner s = new Scanner(System.in); System.out.println("请输入行数"); int temp = s.nextInt(); for (int i = temp; i >= 0; i--) { for (int j = 1; j <= 2*temp - i; j++)// 打印每行的空格 { System.out.print(" "); } for (int j = 1; j <= 2 * i - 1; j++) // 打印每行的* { System.out.print("*"); } System.out.println(); } }
public static void test6() { Scanner s = new Scanner(System.in); System.out.println("请输入两个数:"); int a = s.nextInt(); int b = s.nextInt(); System.out.println(a+"**********"+b); int m = 0; int j = 0; for (int i = 2; i <= 100; i++) { for (j = 2; j <= i; j++) { if (i % j == 0) break; } if (j >= i) { if (a < i && i < b) { System.out.print(i + " ");
}else if(b < i && i < a){ System.out.print(i + " ");
import java.util.Scanner;public class Test {
public static void test1() {
int m = 0;
for (int i = 1; i <= 200; i++) {
if (i % 3 == 0) {
System.out.print(i + " ");
m++;
}
}
System.out.println("1-200之内总共有" + m + "个能被 3整队的数");
} public static void test2() {
int m = 0;
int j = 0;
for (int i = 2; i <= 100; i++) {
for (j = 2; j <= i; j++) {
if (i % j == 0)
break; }
if (j >= i) {
System.out.print(i + " ");
m++;
}
}
System.out.println("*********" + m + "个"); } public static void test3() {
int a, b, c, d;
for (a = 100; a < 1000; a++) {
b = a / 100;
c = a % 100 / 10;
d = a % 10;
if (a == b * b * b + c * c * c + d * d * d) {
System.out.println(a);
}
} } public static void test4() {
Scanner s = new Scanner(System.in);
System.out.println("请输入行数");
int temp = s.nextInt();
int i, j, k;
for (i = 1; i <= temp / 2 + 1; i++) {// 上部分
for (j = 1; j <= temp / 2 + 1 - i; j++)
// 前半段打空格
System.out.print(" ");
for (k = 1; k <= 2 * i - 1; k++)
// 打"*"
System.out.print("*");
System.out.println("");
} for (i = 1; i <= temp - (temp / 2 + 1); i++) {// 下部分
for (j = 1; j <= i; j++)
System.out.print(" ");
for (k = 1; k <= temp - 2 * i; k++)
System.out.print("*");
System.out.println("");
} } public static void test5() {
Scanner s = new Scanner(System.in);
System.out.println("请输入行数");
int temp = s.nextInt();
for (int i = temp; i >= 0; i--) {
for (int j = 1; j <= 2*temp - i; j++)// 打印每行的空格
{
System.out.print(" ");
} for (int j = 1; j <= 2 * i - 1; j++) // 打印每行的*
{
System.out.print("*");
}
System.out.println();
} }
public static void test6() {
Scanner s = new Scanner(System.in);
System.out.println("请输入两个数:");
int a = s.nextInt();
int b = s.nextInt();
System.out.println(a+"**********"+b);
int m = 0;
int j = 0;
for (int i = 2; i <= 100; i++) {
for (j = 2; j <= i; j++) {
if (i % j == 0)
break; }
if (j >= i) {
if (a < i && i < b) {
System.out.print(i + " ");
}else if(b < i && i < a){
System.out.print(i + " ");
}
}
}
} public static void main(String[] args) {
test1();
test2();
test3();
// test4();
//test5();
test6();
}
}