本文主要是介绍java 打印星号,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
代码1
package lesson.l2_for;
//6列4行
//******
//******
//******
//******
public class ForDemo8 {
public static void main(String[] args) {
for (int i=1;i<=4;i++){
for (int j = 1; j <=6 ; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
代码2
package lesson.l2_for;
//打印
//*
//**
//***
//****
//*****
public class ForDemo9 {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
代码2-1
package lesson.l2_for;
//打印
//****
//***
//**
//*
public class ForDemo10 {
public static void main(String[] args) {
for (int i = 4; i >= 1; i--) {
for (int j = i; j >= 1; j--) {
System.out.print("*");
}
System.out.println();
}
}
}
代码2-2
package lesson.l2_for;
//打印
//****
//***
//**
//*
public class ForDemo10_2 {
public static void main(String[] args) {
for (int i = 1; i <=4 ; i++) {
for (int j = 1; j <=5-i ; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
代码3
package lesson.l2_for;
//打印
//*
//**
//***
//****
//*****
//****
//***
//**
//*
public class ForDemo11 {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
for (int i = 1; i <= 4; i++) {
for (int k = 1; k <= 5 - i; k++) {
System.out.print("*");
}
System.out.println();
}
}
}
代码4
package lesson.l2_for;
//打印棱形
public class ForDemo12 {
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <=6-i; j++) {
System.out.print(" ");
}
for (int k = 1; k <= i; k++) {
System.out.print(" *");
}
System.out.println();
}
for (int i = 1; i <=4 ; i++) {
for (int j = 1; j <=i+1 ; j++) {
System.out.print(" ");
}
//for (int j = i; j <=4; j++) {
for (int j = 1; j <=5-i; j++) {
System.out.print(" *");
}
System.out.println();
}
}
}
代码5
package lesson.l2_for;
//打印
// **********
// **** ****
// *** ***
// ** **
// * *
// ** **
// *** ***
// **** ****
// **********
public class ForDemo13 {
public static void main(String[] args) {
//上半部分
for (int i = 1; i <= 5; i++) {
for (int j = 1; j <= 6 - i; j++) {
System.out.print("*");
}
for (int j = 1; j <= i - 1; j++) {
System.out.print(" ");
}
for (int j = 1; j <= 6 - i; j++) {
System.out.print("*");
}
System.out.println();
}
//下半部分
for (int i = 2; i <= 5; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
for (int j = 1; j <= 5 - i; j++) {
System.out.print(" ");
}
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
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