Java编程输出各种*三角形

public static void main(String[] args) {
for (int j = 1; j <= 9; j++) {
for (int i = 1; i <= j; i++) {
System.out.print("* “);
}
System.out.println();
}
}

public static void main(String[] args) {
for (int j = 1; j <= 8; j++) {
for (int i = 1; i <= 8-j; i++) {
System.out.print(” “);
}
for (int i = 1; i <= j; i++) {
System.out.print(”* “);
}
System.out.println();
}
}

public static void main(String[] args) {
for (int j = 1; j <= 8; j++) {
for (int i = 1; i <= 9-j; i++) {
System.out.print(”* ");
}
System.out.println();
}
}

public static void main(String[] args) {
for (int j = 1; j <= 8; j++) {
for (int i = 1; i <= j-1; i++) {
System.out.print(" “);
}
for (int i = 1; i <= 9-j; i++) {
System.out.print(”");
}
System.out.println();
}
}

public static void main(String[] args) {
int rows=5;
for(int i=1;i<=rows;i++) {
for(int j=1;j<=i-1;j++) {
System.out.print(" ");
}
for(int x=1;x<=11-2i;x++){
System.out.print("");
}
System.out.println("");
}
}

public static void main(String[] args) {
int rows=5;
for(int i=1;i<=rows;i++) {
for(int j=1;j<=rows-i;j++) {
System.out.print(" ");
}
for(int x=1;x<=2i-1;x++){
System.out.print("");
}
System.out.println("");
}
}

public static void main(String[] args) {
for (int j = 1; j <= 8; j++) {
for (int i = 1; i <= 8-j; i++) {
System.out.print(" “);
}
for (int i = 1; i <= j; i++) {
System.out.print(” “);
}
System.out.println();
}
for (int j = 1; j <= 7; j++) {
for (int i = 1; i <= j; i++) {
System.out.print(” “);
}
for (int i = 1; i <= 8-j; i++) {
System.out.print(”* “);
}
System.out.println();
}
}

public static void main(String[] args) {
for (int j = 1; j <= 7; j++) {
for (int i = 1; i <= j; i++) {
System.out.print(”* “);
}
System.out.println();
}
for (int j = 1; j <= 6; j++) {
for (int i = 1; i <= 7-j; i++) {
System.out.print(”* “);
}
System.out.println();
}
}

public static void main(String[] args) {
int rows=5;
for(int i=1;i<=rows;i++) {
for (int j = 1; j <= rows - i; j++) {
System.out.print(” “);
}
for (int x = 1; x <= 2 * i - 1; x++) {
System.out.print(”* “);
}
System.out.println(”");
}
for(int i=1;i<=4;i++) {
for(int j=1;j<=i;j++) {
System.out.print(" “);
}
for(int x=1;x<=9-2i;x++){
System.out.print(" “);
}
System.out.println(””);
}
}

public static void main(String[] args) {
for(int i = -4;i<=4;i++){
int k = i<0?-i:i;
for(int j=1;j<=9;j++){
if(j == k+1 || j == 9-k ){
System.out.print("* “);
}else{
System.out.print(” ");
}
}
System.out.println();
}
}