Java 打印由星号组成的倒三角形
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时间：2020-08-12 17:39:00 来源:igfitidea点击:
Printing an upside down triangle made of asterisks
提问by name123
class upsidedown {
public static void main(String args[]) {
int x, y;
for (y = 1; y <= 5; y++) {
for (x = 0; x < 5 - y; x++) {
System.out.print(' ');
}
for (x = (2 - y); x < (2 - y) + (2 * y - 1); x++) {
System.out.print('*');
}
System.out.print('\n');
}
}
}
So far my code prints out a regular, right side up triangle. How do I make it upside down?
到目前为止，我的代码打印出了一个规则的、正面朝上的三角形。我如何让它颠倒？
采纳答案by nook
Very easily. Using your same logic, just reverse the order that you print your lines with.
非常简单地。使用相同的逻辑，只需颠倒打印行的顺序即可。
public class UpsideDown {
public static void main(String args[]) {
int x, y;
for (y = 5; y >= 1; y--) { //reverse here
for (x = 0; x < 5 - y; x++)
System.out.print(' ');
for (x = (2 - y); x < (2 - y) + (2 * y - 1); x++)
System.out.print('*');
System.out.print('\n');
}
}
}
Also, please follow java naming conventions.
另外，请遵循java 命名约定。
