Java打印金字塔图案的程序实现

本文旨在提供用于图案打印的Java实现。
简单的金字塔图案

import java.io.*; //Java code to demonstrate star patterns public class lsbin { //Function to demonstrate printing pattern public static void printStars( int n) { int i, j; //outer loop to handle number of rows //n in this case for (i= 0 ; i< n; i++) {//inner loop to handle number of columns //values changing acc. to outer loop for (j= 0 ; j< =i; j++) { //printing stars System.out.print( "* " ); }//ending line after each row System.out.println(); } }//Driver Function public static void main(String args[]) { int n = 5 ; printStars(n); } }

输出如下：

* * * * * * * * * * * * * * *

180度旋转后

import java.io.*; //Java code to demonstrate star pattern public class lsbin { //Function to demonstrate printing pattern public static void printStars( int n) { int i, j; //outer loop to handle number of rows //n in this case for (i= 0 ; i< n; i++) {//inner loop to handle number spaces //values changing acc. to requirement for (j= 2 *(n-i); j> = 0 ; j--) { //printing spaces System.out.print( " " ); }//inner loop to handle number of columns //values changing acc. to outer loop for (j= 0 ; j< =i; j++) { //printing stars System.out.print( "* " ); }//ending line after each row System.out.println(); } }//Driver Function public static void main(String args[]) { int n = 5 ; printStars(n); } }

【Java打印金字塔图案的程序实现】输出如下：

** * * * * * * * * * * * * *

印刷三角

import java.io.*; //Java code to demonstrate star pattern public class lsbin { //Function to demonstrate printing pattern public static void printTriagle( int n) { //outer loop to handle number of rows //n in this case for ( int i= 0 ; i< n; i++) {//inner loop to handle number spaces //values changing acc. to requirement for ( int j=n-i; j> 1 ; j--) { //printing spaces System.out.print( " " ); }//inner loop to handle number of columns //values changing acc. to outer loop for ( int j= 0 ; j< =i; j++ ) { //printing stars System.out.print( "* " ); }//ending line after each row System.out.println(); } }//Driver Function public static void main(String args[]) { int n = 5 ; printTriagle(n); } }

输出如下：

* * * * * * * * * * * * * * *

数字模式

import java.io.*; //Java code to demonstrate number pattern public class lsbin { //Function to demonstrate printing pattern public static void printNums( int n) { int i, j, num; //outer loop to handle number of rows //n in this case for (i= 0 ; i< n; i++) { //initialising starting number num= 1 ; //inner loop to handle number of columns //values changing acc. to outer loop for (j= 0 ; j< =i; j++) { //printing num with a space System.out.print(num+ " " ); //incrementing value of num num++; }//ending line after each row System.out.println(); } }//Driver Function public static void main(String args[]) { int n = 5 ; printNums(n); } }

输出如下：

1 1 2 1 2 3 1 2 3 4 1 2 3 4 5

没有重新分配的号码

import java.io.*; //Java code to demonstrate star pattern public class lsbin { //Function to demonstrate printing pattern public static void printNums( int n) { //initialising starting number int i, j, num= 1 ; //outer loop to handle number of rows //n in this case for (i= 0 ; i< n; i++) {//without re assigning num //num = 1; for (j= 0 ; j< =i; j++) { //printing num with a space System.out.print(num+ " " ); //incrementing num at each column num = num + 1 ; }//ending line after each row System.out.println(); } }//Driver Function public static void main(String args[]) { int n = 5 ; printNums(n); } }

输出如下：