程序打印有趣的图案
原文:https://www . geesforgeks . org/program-to-print-interest-pattern/
打印以下图案的程序:
********1********
*******2*2*******
******3*3*3******
*****4*4*4*4*****
****5*5*5*5*5****
***6*6*6*6*6*6***
**7*7*7*7*7*7*7**
例:
Input : 4
Output :
********1********
*******2*2*******
******3*3*3******
*****4*4*4*4*****
Input :5
Output :
********1********
*******2*2*******
******3*3*3******
*****4*4*4*4*****
****5*5*5*5*5****
C++
// CPP program to print pattern
#include<bits/stdc++.h>
using namespace std;
void StarPattern(int height)
{
// This loop prints number of rows
for (int i=0; i<height; i++ )
{
// For every row, first '*' will be
// printed Height-rowNumber times.
for (int j = height-1; j>i; j--)
{
cout<<"*";
}
// Print character '*' and Row number
// alternately boolean variable to
// decide whether to print char or int
bool printChar = false;
for (int j = 0; j< ((i*2) +1); j++)
{
if ( printChar )
{
cout<<"*";
}
else
{
cout<< (i + 1);
}
// Each time after printing char
// or int reverse the boolean variable
// to print alternatively
printChar = !printChar;
}
// After printing char and int,
// it will print '*'
for (int j = height-1; j>i; j--)
{
cout<<"*";
}
cout<<endl;
}
}
// driver code
int main()
{
int height = 7;
StarPattern(height);
return 0;
}
// This code is contributed by Sahil_Bansall
Java 语言(一种计算机语言，尤用于创建网站)
// Java program to print pattern
import java.util.*;
import java.lang.*;
import java.io.*;
public class GeeksforGeeks
{
public static void StarPattern(int height)
{
// This loop prints number of rows
for (int i=0; i<height; i++ )
{
// For every row, first '*' will be printed
// Height-rowNumber times.
for (int j = height-1; j>i; j--)
{
System.out.print("*");
}
// Print character '*' and Row number alternately
// boolean variable to decide whether to print char or int
boolean printChar = false;
for (int j = 0; j< ((i*2) +1); j++)
{
if ( printChar )
{
System.out.print("*");
}
else
{
System.out.print(i + 1);
}
// Each time after printing char or int
// reverse the boolean variable to print alternatively
printChar = !printChar;
}
// After printing char and int, it will print '*'
for (int j = height-1; j>i; j--)
{
System.out.print("*");
}
System.out.println();
}
}
// Driver Code
public static void main(String args[])
{
int height = 7;
StarPattern(height);
}
}
Python 3
# Python program to print pattern
def StarPattern(height):
# This loop prints number of rows
for i in range(height):
# For every row, first '*' will be
# printed Height-rowNumber times.
for j in range(height-1,i,-1):
print("*",end="")
# Print character '*' and Row number
# alternately boolean variable to
# decide whether to print char or int
printChar = False
for j in range(((i*2) +1)):
if ( printChar ):
print("*",end="")
else:
print(i + 1,end="")
# Each time after printing char
# or int reverse the boolean variable
# to print alternatively
printChar = not printChar
# After printing char and int,
# it will print '*'
for j in range(height-1,i,-1):
print("*",end="")
print()
# Driver code
height = 7
StarPattern(height)
# This code is contributed
# by Anant Agarwal.
C
// C# program to print pattern
using System;
public class GeeksforGeeks {
public static void StarPattern(int height)
{
// This loop prints number of rows
for (int i = 0; i < height; i++) {
// For every row, first '*' will be
// printed Height-rowNumber times.
for (int j = height - 1; j > i; j--) {
Console.Write("*");
}
// Print character '*' and Row number
// alternately boolean variable to decide
// whether to print char or int
bool printChar = false;
for (int j = 0; j < ((i * 2) + 1); j++) {
if (printChar) {
Console.Write("*");
}
else {
Console.Write(i + 1);
}
// Each time after printing char
// or int reverse the boolean variable
// to print alternatively
printChar = !printChar;
}
// After printing char and int, it will print '*'
for (int j = height - 1; j > i; j--) {
Console.Write("*");
}
Console.WriteLine();
}
}
// Driver Code
public static void Main()
{
int height = 7;
StarPattern(height);
}
}
// This code is contributed by vt_m.
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP implementation to
// print pattern
function StarPattern($height)
{
// This loop prints number
// of rows
for ($i = 0; $i < $height; $i++ )
{
// For every row, first '*'
// will be printed
// Height-rowNumber times.
for ($j = $height - 1; $j > $i;
$j--)
{
echo "*";
}
// Print character '*' and
// Row number alternately
// boolean variable to decide
// whether to print char or int
$printChar = false;
for ($j = 0; $j< (($i * 2) + 1);
$j++)
{
if ( $printChar )
{
echo "*";
}
else
{
echo ($i + 1);
}
// Each time after printing
// char or int reverse the
// boolean variable to print
// alternatively
$printChar = !$printChar;
}
// After printing char and int,
// it will print '*'
for ($j = $height-1; $j > $i;
$j--)
{
echo "*";
}
echo "\n";
}
}
// Driver code
$height = 7;
StarPattern($height);
// This code is contributed by mits
?>
java 描述语言
<script>
// JavaScript program to print pattern
function StarPattern(height)
{
// This loop prints number of rows
for (var i = 0; i < height; i++)
{
// For every row, first '*' will be
// printed Height-rowNumber times.
for (var j = height + 1; j > i; j--)
{
document.write("*");
}
// Print character '*' and Row number
// alternately boolean variable to
// decide whether to print char or int
var printChar = false;
for (var j = 0; j < i * 2 + 1; j++)
{
if (printChar) {
document.write("*");
} else {
document.write(i + 1);
}
// Each time after printing char
// or int reverse the boolean variable
// to print alternatively
printChar = !printChar;
}
// After printing char and int,
// it will print '*'
for (var j = height + 1; j > i; j--) {
document.write("*");
}
document.write("<br>");
}
}
// driver code
var height = 7;
StarPattern(height);
// This code is contributed by rdtank.
</script>
输出:
********1********
*******2*2*******
******3*3*3******
*****4*4*4*4*****
****5*5*5*5*5****
***6*6*6*6*6*6***
**7*7*7*7*7*7*7**
方法 2(使用条件):
我们可以使用图案的位置来识别要打印数字或“*”的位置。
例如，取高度= 5:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
1 * * * * 1 * * *
2 * * * * 2 * 2 * * * *
3 * * * 3 * 3 * 3 * * *
4 * * * 4 * 4 * 4 * * *
5 * * 5 * 5 * 5 * 5 * 5 * *
现在想象我们正在打印一个装满“*”的盒子，在特定的地方我们看到数字。注意他们的位置，并观察到在所有行中，它从 i+j == 10 开始，到 j-i <= height+4. And it is printing only when i+j is even. There we will print i when it is i+j is even and in the above-specified range. 结束
Java 语言(一种计算机语言，尤用于创建网站)
/*package whatever //do not write package name here */
import java.io.*;
public class GFGInterestingPattern {
public static void main(String[] args) {
int height = 7;
//Input for our interesting patterns height
printPattern(height);
}
public static void printPattern(int height){
//This loop prints the rows
for(int i=1; i<=height; i++){
//This loop prints the columns
for(int j=1; j<=17; j++){
//This condition checks whether to print number or '*'
if((i+j)%2 == 0 && i+j >= 10 && j-i <= 8) {
System.out.print(i);
} else {
System.out.print('*');
}
}
//Goes to next line
System.out.println();
}
}
//This code is contributed by Satya Anvesh R
}
Output
********1********
*******2*2*******
******3*3*3******
*****4*4*4*4*****
****5*5*5*5*5****
***6*6*6*6*6*6***
**7*7*7*7*7*7*7**
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