1.package testhomework;
public class homework {
public static void main(String[] args) {
System.out.println("193230118"+"计算机1901"+"齐泽浩");
}
}
2.package testhomework;
public class homework2 {
public static void main(String[] args) {
int size=3;
for (int i = 1; i <= size; i++) {
for (int j = 1; j <= size - 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 <= size-1; i++) {
for (int j = 1; j <= i; j++){
System.out.print(" ");
}
for (int k = 2*size-3; k >= 2 * i - 1; k--){
System.out.print('*');
}
System.out.println();
}
}
}
3.package testhomework;
public class homework3 {
public static void main(String[] args) {
int a = 5,b = 8,c = 0;
c = a*a+b*b;
System.out.println(c);
}
}
3.
