for打印直角三角形，等腰三角形，等边三角形，正菱形

ITRuiRui

于 2020-07-20 11:58:02 发布

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文章标签： java

本文链接：https://blog.youkuaiyun.com/Ruirui666999/article/details/107460617

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本文详细介绍如何使用Java编程语言打印各种图形，包括直角三角形、等腰三角形、等边三角形和正菱形。通过具体代码示例，读者可以学习到如何运用嵌套循环和字符打印来创建这些基本图形，适用于初学者理解和掌握Java的基本语法。

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public class Chart0505 {
//for打印三角形

public static void main(String[] args) {
	//直角三角形
	for (int i = 1; i <= 4; i++) {
		for (int j = 1; j <= i; j++) {
			System.out.print("*");
		}
		System.out.println();
	}
   //等腰三角形
for(int i = 1;i <= 4;i++) {
	for (int j = 1; j <= (4-i); j++) {
		System.out.print(" ");
	}
	for (int k = 1; k <= (2 * i - 1); k++) {
		System.out.print("*");
		
	}
	System.out.println();
}
//等边三角形
for (int i = 1; i <= 4; i++) {
	for (int j = 1; j <= (4-i); j++) {
		System.out.print(" ");
	}
	for (int k = 1; k <= i; k++) {
		System.out.print("* ");
	}
	System.out.println();
}
//正菱形
for (int i = 1; i <= 4; i++) {
	for (int j = 1; j <= (4-i); j++) {
		System.out.print(" ");
	}
	for (int k = 1; k <= i; k++) {
		System.out.print("* ");
	}
	System.out.println();
}
for (int i = 1; i <= 3; i++) {
	for (int j = 1; j <= i; j++) {
		System.out.print(" ");
	}
	for (int k = 1; k <= (4-i); k++) {
		System.out.print("* ");
	}
	System.out.println();
}

}
}