第一次作业
1.输入班级学号和姓名
public
class
class1 {
/**
* @param args
*/
public
static
void
main(String[] args) {
// TODO Auto-generated method stub
System.out.println(
"193230111计算机1901李杰"
);
}
}
2.输出以下图形
*
***
*****
***
*
public
class
class1 {
/**
* @param args
*/
public
static
void
main(String[] args) {
// TODO Auto-generated method stub
int
i,j,k;
for
(i=
1
;i<=
2
;i++)
{
for
(j=
1
;j<=
4
-i;j++)
System.out.print(
" "
);
for
(k=
1
;k<=
2
*i-
1
;k++)
System.out.print(
"*"
);
System.out.print(
"\n"
);
}
for
(i=
1
;i<=
3
;i++)
{
for
(j=
1
;j<=i;j++)
System.out.print(
" "
);
for
(k=
1
;k<=
7
-
2
*i;k++)
System.out.print(
"*"
);
System.out.print(
"\n"
);
}
System.out.println();
}
}
3.定义两个整型变量a=5 b=8 求平方和并输出
public class class1 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int a=5; int b=8; System.out.println(a*a+b*b); } }