java记——玩转星星

问题描述：

玩转星星图

程序代码（一）：

import java.util.Scanner;
public class Kl {
public static void main(String[] args){
System.out.println("Please enter the star's row :");
@SuppressWarnings("resource")
Scanner in=new Scanner(System.in);
int row=in.nextInt();
for(int i=0;i<row;i++){
for(int j=0;j<=i;j++)
System.out.print("*");
System.out.println();
}
}

}


运行结果：
Please enter the star's row :
5
*
**
***
****
*****


程序代码（二）：
import java.util.Scanner;

public class Kl {
public static void main(String[] args) {
System.out.println("Please enter the star's row :");
@SuppressWarnings("resource")
Scanner in = new Scanner(System.in);
int row = in.nextInt();
for (int i = 0; i < row; i++) {
for (int j = 0; j <= i; j++) {
System.out.print(" ");
}
for(int j=0;j<row-i;j++){
System.out.print("*");
}
System.out.println();
}
}

}


运行结果：
Please enter the star's row :
10
**********
*********
********
*******
******
*****
****
***
**
*


程序代码（三）：
import java.util.Scanner;

public class Kl {
public static void main(String[] args) {
System.out.println("Please enter the star's row :");
@SuppressWarnings("resource")
Scanner in = new Scanner(System.in);
int row = in.nextInt();
for (int i = 0; i <=row; i++) {
for(int j=0;j<=row-i;j++){
System.out.print(" ");
}
for (int j = 1; j <=2* i-1; j++) {

System.out.print("*");
}
System.out.println();
}
}

}


运行结果：
Please enter the star's row :
5

*
***
*****
*******
*********


程序代码（四）：
import java.util.Scanner;

public class Kl {
public static void main(String[] args) {
System.out.println("Please enter the star's row :");
@SuppressWarnings("resource")
Scanner in = new Scanner(System.in);
int row = in.nextInt();
for (int i = 1; i <=row; i++) {
for(int j=1;j<=row-i;j++){
System.out.print(" ");
}
for (int j = 1; j <=2* i-1; j++) {

char c=(char) (65+i-1);
System.out.print(c);
}
System.out.println();
}
}

}


运行结果：
Please enter the star's row :
5
A
BBB
CCCCC
DDDDDDD
EEEEEEEEE


心得体会：
在输出字母的程序的时候，坐了好久也灭做出来，最后WY*骂哀家笨，说让哀家去吃翔，但是某人不一样没做出来吗。。。。。还不知带谁吃翔呢