import java.util.Scanner;
public class Dome1 {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
System.out.print("请输入数字:");
int hang = input.nextInt();
for (int i = 1; i <= hang; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j+" ");
}
System.out.println(" ");
}
}
}
package page_186;
public class Dome2 {
public static void main(String[] args) {
for (int i = 0; i < 20; i++) {
for (int j = 0; j < 33; j++) {
for (int k = 0; k < 100; k++) {
if (7 * i + 4 * j == 100 && i + j + k == 100 && k % 3 == 0) {
System.out.println(i + " " + j + " " + k);
}
}
}
}
}
}
package page_186;
import java.util.Scanner;
public class Dome3 {
public static void main(String[] args) {
int[][]arr=new int[3][4];
int totalScore=0;
int renshu=0;
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j <arr[i].length; j++) {
Scanner input=new Scanner(System.in);
System.out.print("请输入第"+(i+1)+"班的第"+(j+1)+"位同学成绩:");
int score=input.nextInt();
arr[i][j]=score;
if(score>85) {
totalScore+=score;
renshu++;
}
}
}
System.out.println("成绩大于85分的人数为:"+renshu);
System.out.println("成绩大于85分的平均分为:"+totalScore/renshu);
}
}
package page_186;
import java.util.Scanner;
public class Dome4 {
public static void main(String[] args) {
int num = 0;
Scanner input = new Scanner(System.in);
for (int i = 0; i < 3; i++) {
System.out.print("请输入您的密码:");
int password = input.nextInt();
if (password == 111111) {
break;
} else {
num++;
continue;
}
}
if (num == 3) {
System.out.println("密码错误，请取卡！！！");
}
if (num < 3) {
System.out.print("请输入金额：");
int amount = input.nextInt();
while (amount % 100 != 0 || amount < 0 || amount > 1000) {
System.out.println("您输入的金额不合法,请重新输入：");
amount = input.nextInt();
}
System.out.println("您取了" + amount + "元");
System.out.println("交易完成请取卡！");
}
}
}
package page_186;
import java.util.Scanner;
public class Dome5 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("请输入菱形行数:");
int rows = input.nextInt();
while (rows % 2 == 0) {
System.out.print("请输入奇数:");
rows = input.nextInt();
}
int n = (rows + 1) / 2;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
System.out.print(" ");
}
for (int k = 1; k <= 2 * i - 1; k++) {
System.out.print("*");
}
System.out.println(" ");
}
for (int i = 1; i <= n - 1; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(" ");
}
for (int k = 1; k <= rows - 2 * i; k++) {
System.out.print("*");
}
System.out.println(" ");
}
}
}