Program to print Reverse Floyd&#039;s triangle - Coding

Floyd’s triangle is a triangle with first natural numbers. Task is to print reverse of Floyd’s triangle.
Examples:

Input : 4
Output :
10 9 8 7
6 5 4 
3 2 
1 

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

C++

<?php 
// PHP program to print reverse  
// of floyd's triangle  
function printReverseFloyd($n)  
{  
    $curr_val = $n * ($n + 1) / 2;  
    for ($i = $n; $i >= 1; $i--)  
    {  
        for ( $j = $i; $j >= 1; $j--)  
        {  
            echo $curr_val-- , " ";  
        }  
  
        echo " \n";  
    }  
}  
  
// Driver Code  
$n = 7;  
printReverseFloyd($n);  
  
// This code is contributed by ajit  
?> 

Javascript

<script> 
  
// Javascript program to print reverse of 
// floyd's triangle 
  
function printReverseFloyd(n) 
    { 
        let curr_val = n * (n + 1) / 2; 
        for (let i = n; i >= 1; i--) { 
            for (let j = i; j >= 1; j--) { 
                document.write(curr_val-- + " "); 
            } 
    
            document.write("<br/>"); 
        } 
    } 
  
  
// Driver Code 
  
          let n = 7; 
        printReverseFloyd(n); 
      
</script> 

Output:

28  27  26  25  24  23  22  
21  20  19  18  17  16  
15  14  13  12  11  
10  9  8  7  
6  5  4  
3  2  
1

Time complexity: O(n²) for given input n

Auxiliary space: O(1)

Reffered: https://www.geeksforgeeks.org

DSA

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Type:	Geek
Category:	Coding
Sub Category:	Tutorial
Uploaded by:	Admin
Views:	8