显示带有嵌套 for 循环的 ASCII 菱形 [英] Display an ASCII diamond with nested for loops
本文介绍了显示带有嵌套 for 循环的 ASCII 菱形的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试使用嵌套的 for
循环显示星号菱形.
I am trying to display a diamond of asterisks using nested for
loops.
这是我目前的代码:
public class Diamond {
public static void main(String[] args) {
int size = 9;
for (int i = 1; i <= size; i += 2) {
for (int k = size; k >= i; k -= 2) {
System.out.print(" ");
}
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}// end loop
for (int i = 1; i <= size; i += 2) {
for (int k = 1; k <= i; k += 2) {
System.out.print(" ");
}
for (int j = size; j >= i; j--) {
System.out.print("*");
}
System.out.println();
}// end loop
}
}
这很接近,但我要打印两次 9 个星号的行.
This is close, but I'm printing the line of 9 asterisks twice.
如何调整第二个 for
循环以在 7 个星号和 2 个空格处开始输出?
How can I adjust the second for
loop to start the output at 7 asterisks and 2 spaces?
推荐答案
在你的第一个 for 循环中删除 =
标记并使用 <
例如
In your first for loop remove =
mark and just use <
e.g.
for (int i = 1; i < size; i += 2)
完整代码:
int size = 9;
for (int i = 1; i < size; i += 2) {
for (int k = size; k >= i; k -= 2) {
System.out.print(" ");
}
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}// end loop
for (int i = 1; i <= size; i += 2) {
for (int k = 1; k <= i; k += 2) {
System.out.print(" ");
}
for (int j = size; j >= i; j--) {
System.out.print("*");
}
System.out.println();
}// end loop
输出:
*
***
*****
*******
*********
*******
*****
***
*
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