java中实现菱形输出

如题

结果

A
BCD
EFGHI
JKLMNOP
QRSTU
VWX
Y

public class XYY {

public static void main(String[] args) {

int i,j,k;
char chTemp = 'A';
for (i=0;i<=3;i++) {
for(j=1;j<=3-i;j++) {
System.out.print(" ");
}
for(k=1;k<=1+i*2;k++) {
System.out.print(chTemp);
chTemp++;

}
System.out.println();
}

int a,b,c;
for(a=3;a>0;a--)
{
for(b=3;b>=a;b--)
System.out.print(" ");
for(c=0;c<2*a-1;c++) {
System.out.print(chTemp);
chTemp++;
}
System.out.println();
}
}

}