Java编写四边形

1，正方形

private static void fun1() {

Scanner sc = new Scanner(System.in);

System.out.println("请输入你要打的边长数：");

int a = sc.nextInt();

for (int i = 0; i < a; i++) {//打印正方形的高

for (int j = 0; j < a; j++) {//打印正方形的长

System.out.print("*"+" ");

}

System.out.println(" ");

}

}

2，平行四边形

//平行四边形

private static void fun2() {

Scanner sc = new Scanner(System.in);

System.out.println("请输入你要打的边长数：");

int a = sc.nextInt();

for (int i = 1; i <= a; i++) {

for (int j = 1; j < i; j++) {

System.out.print(" ");

}

for (int j = 1; j <= a; j++) {

System.out.print("*"+" ");

}

System.out.println(" ");

}

}

3，打印三角形

private static void fun3() {

Scanner sc = new Scanner(System.in);

System.out.println("请输入你要打的边长数：");

int a = sc.nextInt();

for (int i = 1; i <= a; i++) {

for (int j = 1; j <= a-i; j++) {

System.out.print(" ");

}

for (int j = 1; j < i; j++) {

System.out.print("* ");

}

System.out.println();

}

}

4，打印菱形

private static void fun4() {

Scanner sc = new Scanner(System.in);

System.out.println("请输入你要打的边长数：");

int a = sc.nextInt();

//上部分

for (int i = 1; i <= a; i++) {

for (int j = 1; j <= a-i; j++) {

System.out.print(" ");

}

for (int j = 1; j < i; j++) {

System.out.print("* ");

}

System.out.println();

}

//下部分

for (int i = 1; i <= a-1; i++) {

for (int j = 1; j <=i; j++) {

System.out.print(" ");

}

for (int j = 1; j

System.out.print("* ");

}

System.out.println();

}

}

5，打印空心菱形

//空心菱形

private static void fun5() {

Scanner sc = new Scanner(System.in);

System.out.println("请输入你要打的边长数：");

int a = sc.nextInt();

for (int i = 1; i <= a; i++) {

for (int j = 1; j <= a-i; j++) {

System.out.print(" ");

}

for (int j = 1; j <= i; j++) {

if (j==1||j==i){

System.out.print("* ");

}else {

System.out.print(" ");

}

}

System.out.println();

}

for (int i = 1; i <= a-1; i++) {

for (int j = 1; j <=i; j++) {

System.out.print(" ");

}

for (int j = 1; j <=a-i; j++) {

if (j==1||j==a-i){

System.out.print("* ");

}else {

System.out.print(" ");

}

}

System.out.println();

}

}

标签：Java,sc,int,System,println,编写,print,四边形,out

来源： https://blog.csdn.net/weixin_44889894/article/details/110525238