public class HollowDiamond { public static void main(String[] args) { int size = 5; for (int i = 0; i < size; i++) { for (int j = 0; j < size - i - 1; j++) { System.out.print(" "); } for (int j = 0; j < 2 * i + 1; j++) { if (i == 0 || i == size - 1 || j == 0 || j == 2 * i) { System.out.print("*"); } else { System.out.print(" "); } } System.out.println(); } }}
时间: 2023-05-23 11:04:47 浏览: 38
A:这是一个Java程序,用于打印出一颗空心的菱形。程序中的两个for循环分别控制了行和列的数量,可以通过修改size的值来改变菱形的大小。其中,第一个for循环控制行的数量,第二个和第三个for循环控制每一行中列的数量和打印的字符。如果i等于0或size-1,或者j等于0或2*i,就打印一个星号,否则打印空格。
相关问题
public class Main { public static void main(String[] args) { int size = 5; for (int i = 0; i < size; i++) { for
(int j = 0; j < size; j ) { System.out.print("*"); } System.out.println(); } }}
The code above is incomplete and will not run as it is missing the increment statement for the loop variables i and j.
A corrected version of the code would be:
public class Main {
public static void main(String[] args) {
int size = 5;
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
This code will print a square made of asterisks with a size of 5x5.
public class HollowDiamond { public static void main(String[] args) { int size = 5; for (int i = 0; i < size; i++) { for (int j = 0; j < size - i - 1; j++) { System.out.print(" "); } for (int j = 0; j < 2 * i + 1; j++) { if (i == 0 || i == size - 1 || j == 0 || j == 2 * i) { System.out.print("*"); } else { System.out.print(" "); } } System.out.println(); } }}进行注释
我可以回答这个问题。这是一个 Java 代码,用于打印一个中空的菱形。下面是对代码的注释:
public class HollowDiamond {
public static void main(String[] args) {
int size = 5; // 菱形的大小
for (int i = 0; i < size; i++) { // 控制行数
for (int j = 0; j < size - i - 1; j++) { // 控制空格数
System.out.print(" ");
}
for (int j = 0; j < 2 * i + 1; j++) { // 控制星号数
if (i == 0 || i == size - 1 || j == 0 || j == 2 * i) { // 判断是否需要打印星号
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println(); // 换行
}
}
}