菜鸟学涂

来源：互联网发布：引物设计软件编辑：程序博客网时间：2024/04/20 12:39

请高手精简指导

public class Text217 {

/**
* 将成绩分等级
*/
public static void main(String[] args) {
  Scanner sc=new Scanner(System.in);
  System.out.print("请输入您的成绩：");
    float score = sc.nextFloat();
         if(score>=90)
        System.out.println("您获得A，优秀！");
         else if(score>=80)
        System.out.println("您获得B，很棒！");
         else if(score>=70)
        System.out.println("您获得C，良好！");
         else if(score>=60)
        System.out.println("您获得D，刚及格！");
         else
        System.out.println("您获得E，要加油！");
}

}

public class Text218 {

/**
*
*        打印以下图标
*             *
                   **
                   ***
                   ****
                   *
                   **
                   ***
                   ****
*/
public static void main(String[] args) {

  for(int t=0;t<2;t++){
  for(int i=1;i<5;i++){
   for(int j=0;j<i;j++)
    System.out.print("*");
  System.out.println();

}
}
}
}

import java.util.Scanner;

public class Text219 {
/*
*              1
                  1 2 1
                1 2 3 2 1
              1 2 3 4 3 2 1
            1 2 3 4 5 4 3 2 1
*/

public static void main(String[] args) {
  int i;
  int j;
  int t;
  Scanner sc=new Scanner(System.in);
  System.out.println("请输入要打印的行数：");
  int line=sc.nextInt();

  for (i = line; i > 0; i--) {
   for (j = 1; j < i + 1; j++)
    System.out.print(" ");

   for (t = 0; t <= line+1 - j;) {
    t++;
    System.out.print(t+" ");
   }
   for (int r = 0; r < line+1 - j;) {
    r++;
    System.out.print((t - r)+" ");

   }
   System.out.println();
  }

}
}