# Program to Print Pyramid Pattern using numbers

Given a number N denoting the number of rows. The task is to print the zigzag pattern with N rows as shown in the below examples.

Examples:

```Input : 2
Output :        1
2       3

Input : 5
Output :                1
2       6
3       7       10
4       8       11      13
5       9       12      14      15
```

Approach:
1. Use a for loop for printing the number of rows.
2. Use two for loops for printing space and pattern.
3. Calculate starting value for each row with variable t.

Below is the implementation of above approach:

## C++

 `// C++ Program to print pyramid ` `// pattern using numbers ` `#include ` `using` `namespace` `std; ` `// Function to print pyramid pattern ` `class` `gfg ` `{ ` ` ``public` `: ` ` ``void` `printPattern(``int` `n) ` ` ``{ ` `    ``int` `t; ` ` `  `    ``// outer loop to print rows ` `    ``for` `(``int` `i = 1; i <= n; i++) { ` ` `  `        ``// inner loop to print spaces ` `        ``for` `(``int` `j = i; j < n; j++) ` `            ``printf``(``"\t"``); ` ` `  `        ``// calculate initial value ` `        ``t = i; ` ` `  `        ``// inner loop to print pattern ` `        ``for` `(``int` `k = 1; k <= i; k++) { ` `            ``printf``(``"%d\t\t"``, t); ` `            ``t = t + n - k; ` `        ``} ` `        ``printf``(``"\n"``); ` `    ``} ` ` ``} ` `}; ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``gfg g; ` `    ``int` `n = 6; ` `    ``g.printPattern(n); ` `    ``return` `0; ` `} ` `//this code is contributed by Soumik `

## C

 `// C Program to print pyramid ` `// pattern using numbers ` `#include ` ` `  `// Function to print pyramid pattern ` `void` `printPattern(``int` `n) ` `{ ` `    ``int` `t; ` ` `  `    ``// outer loop to print rows ` `    ``for` `(``int` `i = 1; i <= n; i++) { ` ` `  `        ``// inner loop to print spaces ` `        ``for` `(``int` `j = i; j < n; j++) ` `            ``printf``(``"\t"``); ` ` `  `        ``// calculate initial value ` `        ``t = i; ` ` `  `        ``// inner loop to print pattern ` `        ``for` `(``int` `k = 1; k <= i; k++) { ` `            ``printf``(``"%d\t\t"``, t); ` `            ``t = t + n - k; ` `        ``} ` `        ``printf``(``"\n"``); ` `    ``} ` `} ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``int` `n = 6; ` `    ``printPattern(n); ` `    ``return` `0; ` `} `

## Java

 `// Java Program to print pyramid ` `// pattern using numbers ` `class` `GFG ` `{ ` `// Function to print pyramid pattern ` `static` `void` `printPattern(``int` `n) ` `{ ` `    ``int` `t; ` ` `  `    ``// outer loop to print rows ` `    ``for` `(``int` `i = ``1``; i <= n; i++)  ` `    ``{ ` ` `  `        ``// inner loop to print spaces ` `        ``for` `(``int` `j = i; j < n; j++) ` `            ``System.out.print(``"\t"``); ` ` `  `        ``// calculate initial value ` `        ``t = i; ` ` `  `        ``// inner loop to print pattern ` `        ``for` `(``int` `k = ``1``; k <= i; k++)  ` `        ``{ ` `            ``System.out.print(t + ``"\t\t"``); ` `            ``t = t + n - k; ` `        ``} ` `        ``System.out.println(); ` `    ``} ` `} ` ` `  `// Driver code ` `public` `static` `void` `main(String []args) ` `{ ` `    ``int` `n = ``6``; ` `    ``printPattern(n); ` `} ` `} ` ` `  `// This code is contributed by iAyushRaj `

## Python3

 `# Python3 Program to print pyramid ` `# pattern using numbers ` ` `  `# Function to print pyramid pattern ` `def` `printPattern(n): ` `     `  `    ``# outer loop to print rows ` `    ``for` `i ``in` `range``(``1``, n ``+` `1``): ` ` `  `        ``# inner loop to print spaces ` `        ``for` `j ``in` `range``(i, n): ` `            ``print``(``"\t"``, end ``=` `"") ` ` `  `        ``# calculate initial value ` `        ``t ``=` `i ` ` `  `        ``# inner loop to print pattern ` `        ``for` `k ``in` `range` `(``1``, i ``+` `1``): ` `            ``print``(t, ``"\t"``, ``"\t"``, end ``=` `"") ` `            ``t ``=` `t ``+` `n ``-` `k ` `         `  `        ``print``() ` `     `  `# Driver code ` `n ``=` `6` `printPattern(n) ` `     `  `# This code is contributed  ` `# by iAyushRaj `

## C#

 `// C# Program to print pyramid ` `// pattern using numbers ` `using` `System; ` ` `  `class` `GFG ` `{ ` `// Function to print pyramid pattern ` `static` `void` `printPattern(``int` `n) ` `{ ` `    ``int` `t; ` ` `  `    ``// outer loop to print rows ` `    ``for` `(``int` `i = 1; i <= n; i++) ` `    ``{ ` ` `  `        ``// inner loop to print spaces ` `        ``for` `(``int` `j = i; j < n; j++) ` `            ``Console.Write(``"\t"``); ` ` `  `        ``// calculate initial value ` `        ``t = i; ` ` `  `        ``// inner loop to print pattern ` `        ``for` `(``int` `k = 1; k <= i; k++)  ` `        ``{ ` `            ``Console.Write(t + ``"\t\t"``); ` `            ``t = t + n - k; ` `        ``} ` `        ``Console.WriteLine(); ` `    ``} ` `} ` ` `  `// Driver code ` `public` `static` `void` `Main() ` `{ ` `    ``int` `n = 6; ` `    ``printPattern(n); ` `} ` `} ` ` `  `// This code is contributed by iAyushRaj `

## PHP

 ` `

Output:

```                     1
2        7
3        8        12
4        9        13        16
5        10        14        17        19
6        11        15        18        20        21
```

My Personal Notes arrow_drop_up