1 7
12 67
123 567
1234567
123 567
12 67
1 7
Problem statement:- Program to print a butterfly shape Number pattern.
Data requirement:-
Input Data:- row_size
Output Data:- in or inn(for python)
Additional Data:-out, print_control_x
Program in C
Here is the source code of the C Program to print a butterfly shape Number pattern.
Code:
#include <stdio.h>int main(){ printf("Enter the row size(Odd Number):"); int row_size; scanf("%d", &row_size); int in, out; int print_control_x = 1;
for (out = 1; out <= row_size; out++) { for (in = 1; in <= row_size; in++) { if (in <= print_control_x || in >= row_size - print_control_x + 1) { printf("%d", in); } else { printf(" "); } } if (out <= row_size / 2) print_control_x++; else print_control_x--; printf("\n"); }}
Enter the row size(Odd Number):7
1 7
12 67
123 567
1234567
123 567
12 67
1 7
Program in C++
Here is the source code of the C++ Program to print a butterfly shape Number pattern.
Code:
#include <iostream>using namespace std;int main(){ cout << "Enter the row size(Odd Number):"; int row_size; cin >> row_size; int in, out; int print_control_x = 1; for (out = 1; out <= row_size; out++) { for (in = 1; in <= row_size; in++) { if (in <= print_control_x || in >= row_size - print_control_x + 1) { cout << in; } else { cout << " "; } } if (out <= row_size / 2) print_control_x++; else print_control_x--; cout << "\n"; }}
Enter the row size(Odd Number):5
1 5
12 45
12345
12 45
1 5
Program in Java
Here is the source code of the Java Program to print a butterfly shape Number pattern.
Code:
import java.util.Scanner;public class ButterflyNumberPattern { public static void main(String[] args) { Scanner cs = new Scanner(System.in); System.out.println("Enter the row size(Odd Number):"); int out, in; int row_size = cs.nextInt(); int print_control_x = 1; for (out = 1; out <= row_size; out++) { for (in = 1; in <= row_size; in++) { if (in <= print_control_x || in >= row_size - print_control_x + 1) { System.out.print(in); } else { System.out.printf(" "); } } if (out <= row_size / 2) print_control_x++; else print_control_x--; System.out.println(); } cs.close(); }}
Input/Output:Enter the row size(Odd Number):7
1 7
12 67
123 567
1234567
123 567
12 67
1 7
Program in Python
Here is the source code of the Python Program to print a butterfly shape Number pattern.
Code:
row_size = int(input("Enter the row size:"))print_control_x = 1for out in range(1, row_size+1): for inn in range(1, row_size+1): if inn <= print_control_x or inn >= row_size-print_control_x+1: print(inn, end="") else: print(" ", end="") if out <= row_size // 2: print_control_x += 1 else: print_control_x -= 1 print("\r")
Enter the row size:9
1 9
12 89
123 789
1234 6789
123456789
1234 6789
123 789
12 89
1 9
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