Program to print interesting pattern
Program to print following pattern:
********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**
Examples :
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
// 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); } } |
Python3
# 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 = 7StarPattern(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. |
PHP
<?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 ?> |
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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