09-使用for循环输出空心菱形(循环)

时间:2021-02-15 16:16:06
/**
* 使用for循环输出空心菱形
*
*/
public class Test7 {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for (int j = 1; j < 11 - 2 * i; j++) {
System.out.print(" ");
}
for (int k = 1; k <= 2 * i - 1; k++) {
if (k == 1 || k == 2 * i - 1) {
System.out.print("*");
} else {
System.out.print(" ");
} }
System.out.println();
}
for (int i = 4; i >= 1; i--) {
for (int j = 9; j > 2 * i - 1; j--) {
System.out.print(" ");
}
for (int k = 1; k <= 2 * i - 1; k++) {
if (k == 1 || k == 2 * i - 1) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println();
} }
}

09-使用for循环输出空心菱形(循环)