Program to find all Armstrong numbers (PHP)
An Armstrong number is an n digit number, which is equal to the sum of the nth powers of its digits. All the 1 digit numbers (1-9) are Armstrong number because 1*1=1 which is equals to number (1) itself, 2*1=2 which is equals to number(2) itself so on for all the 1 digit numbers (1-9).There are no 2 digit Armstrong numbers. Feel free to ask me if you still have doubt.
| 1 | <? |
| 2 | armstrong(9999); |
| 3 | function armstrong($maximum_number) |
| 4 | { |
| 5 | $sum=0; |
| 6 | print("Armstrong numbers between 0 to $maximum_number are: "); |
| 7 | |
| 8 | for($i=0; $i<=$maximum_number; $i++) |
| 9 | { |
| 10 | $num=$i; |
| 11 | $sum=0; |
| 12 | $len=strlen($i); //Length of number i.e number of digits in a number |
| 13 | while($num>0) |
| 14 | { |
| 15 | $rem=$num%10; |
| 16 | $power=pow($rem,$len);//Raise to the power of length of each digit in a number. |
| 17 | $sum=$sum+$power; //Sum of power of all digits of a number |
| 18 | $num=$num/10; // Calculate next number |
| 19 | } |
| 20 | if($sum==$i) |
| 21 | { |
| 22 | echo $i . "= Yes <br/>"; |
| 23 | } |
| 24 | } |
| 25 | } |
| 26 | ?> |
by hitesh on 19-Aug-2016 06:32 pm About the author
Hi, I am Sachin Puri, I am a Programmer. Programming is my work and it is the thing i like to do most in my free time.
You can catch Sachin Puri at Google+
Hi, I am Sachin Puri, I am a Programmer. Programming is my work and it is the thing i like to do most in my free time.