java中怎样打印一个等边三角形

java中怎样打印一个等边三角形

以下是实心、空心、倒立，三种等边三角形的代码：
实心等边三角形：
public static void main(String[] args) {
int n = 5;
String c = "0";
String x = "*";
for (int i = 0; i < n; i++) {
for (int k = 0; k < n - i - 1; k++) {
System.out.print(c);
}
for (int k = 0; k < i + 1; k++) {
System.out.print(x);
}
for (int k = 0; k < i; k++) {
System.out.print(x);
}

// for (int k = 0; k < n - i - 1; k++) {
// System.out.print(c);
// }
System.out.println();
}
}

空心等边三角形：
public static void main(String[] args) {
int n = 6;
String c = " ";
String x = "*";
for (int i = 0; i < n; i++) {
for (int j = 0; j < 2 * n; j++) {
if (j == (n - i) || j == (n + i)) {
System.out.print(x);
} else {
System.out.print(c);
}

}
System.out.println();
}
for(int j=0;j<2*(n+1)-1;j++){
System.out.print(x);
}

}

倒等边三角形：
public static void main(String[] args) {
int n = 5;
String c = " ";
String x = "*";
for(int j=0;j<2*(n+1)-1;j++){
System.out.print(x);
}
System.out.println();
for (int i = 0; i < n; i++) {
for (int j = 0; j < 2 * n; j++) {
if (j == i+1 || j == (2*n - i-1)) {
System.out.print(x);
} else {
System.out.print(c);
}

}
System.out.println();
}

}

用java的图形类可以画出多种图形。你搜下java画图。追问需要Java代码编写的，暂时不需要Java画图追答你难道只要用简单的循环打印一个等边三角形啊！