Armstrong Number in Python | 2024

What’s Armstrong Quantity?

The armstrong quantity, often known as the narcissist quantity, is of particular curiosity to newbies. It kindles the curiosity of programmers simply setting out with studying a brand new programming language. In quantity idea, an Armstrong quantity in a given quantity base b is a quantity that’s the sum of its personal digits every raised to the ability of the variety of digits.
To place it merely, if I’ve a 3-digit quantity then every of the digits is raised to the ability of three and added to acquire a quantity. If the quantity obtained equals the unique quantity then, we name that Armstrong quantity. The distinctive property associated to the armstrong numbers is that it may belong to any base within the quantity system. For instance, within the decimal quantity system, 153 is an armstrong quantity.
1^3+5^3+3^3=153

1. What is armstrong number
2. Armstrong Number with Examples
3. Armstrong number logic
4. Armstrong Number Algorithm
5. Algorithm to check if the given number is Armstrong or not
6. What is the Armstrong 4-digit number?
7. How do I find my 4-digit Armstrong number?
8. Printing a Series of Armstrong Numbers Using Python
9. Python program to check armstrong number
10.  Armstrong number in python FAQs

Armstrong Quantity with Examples

As defined within the prior sections of this weblog, a quantity that’s composed of the digits, such that the sum of the dice of every of those digits is the same as the quantity itself, is known as an Armstrong quantity. Narcissistic numbers are one other identify for Armstrong numbers. Armstrong numbers aren’t relevant within the precise world. It’s simply one other numerical puzzle, in actuality. Check out the next examples of an Armstrong quantity.

Instance-1: 153
13 + 53 + 33 = 153
Instance-2: 370
33 + 73 + 01 = 370
Instance-4: 371
33 + 73 + 13 = 371
Instance-5: 407
43 + 03 + 73 = 407

Amongst single digit numbers 0 and 1 will be thought of as Armstrong numbers. In any case, for the quantity to be an Armstrong quantity, the sum of its digits raised to the ability of complete variety of digits. As an illustration, for a 4 or 5 digit quantity, we might examine the sum of the fourth energy of every digit or the sum of the fifth energy of every digit, respectively.

Armstrong Quantity Logic

Allow us to perceive the logic of acquiring an armstrong quantity.
Contemplate the 6 -digit quantity 548834 .Calculate the sum obtained by including the next phrases.
5^6 + 4^6 + 8^6 + 8^6 + 3^6 + 4^6 = 548834
We acquire the identical quantity once we add the person phrases. Subsequently, it satisfies the property.

122 in base 3 is 1^3+2^3 + 2^3=17
122 base 3 is equal to 2*1+2*3+1*9=17

Armstrong quantity examples

0, 1, 153, 370, 371 and 407 . Why ?

0^1=0
1^1=1
1^3+5^3+3^3=153
3^3+7^3+0^3=370
3^3+7^3+1^3=371
4^3+0^3+7^3=407

4 digit armstrong quantity

For a 4 digit quantity, each digit can be raised to their fourth energy to get the specified consequence.
1634, 8208, 9474 are a couple of examples of a 4 digit armstrong quantity.

Are there any purposes of Armstrong Numbers?

These numbers possess a novel dimension, however sadly, they don’t seem to be of any sensible use. Programmers who study new languages have a tendency to start with puzzles which assist them grasp the ideas of the language they’re studying higher.

Armstrong Quantity Algorithm

We’d like two parameters to implement armstrong numbers. One is the variety of digits within the quantity, and second the sum of the digits raised to the ability of quite a few digits. Allow us to take a look at the algorithm to achieve a greater understanding:

Algorithm:

• The variety of digits in num is came upon
• The person digits are obtained by performing num mod 10, the place the mod is the rest operation.
• The digit is raised to the ability of the variety of digits and saved
• Then the quantity is split by 10 to acquire the second digit.
• Steps 2,3 and 4 are repeated till the worth of num is bigger than 0
• As soon as num is lower than 0, finish the whereas loop
• Verify if the sum obtained is identical as the unique quantity
• If sure, then the quantity is an armstrong quantity

Strategies to Discover an Armstrong Quantity utilizing Python

There are totally different Python packages related to discovering an Armstrong quantity. You’ll be able to examine whether or not a given quantity is an Armstrong quantity or not. Alternatively, you will discover all of the Armstrong numbers inside a specified vary of numbers. We are going to go along with each these approaches associated to the identification of Armstrong numbers, in Python.

To Verify Whether or not the Given Quantity is Armstrong

#For a 3 digit quantity
num = int(enter('Enter the three digit quantity to be checked for Armstrong: '))
t = num
cube_sum = 0

whereas t!= 0:
    ok = t % 10
    cube_sum += ok**3
    t = t//10
if cube_sum == num:
    print(num, ' is an Armstrong Quantity')
else:
                 print(num, 'shouldn't be a Armstrong Quantity')

Output:

Figuring out the Armstrong Numbers In a Given Vary

t1 = int(enter('Enter the minimal worth of the vary:'))
t2 = int(enter('Enter the utmost worth of the vary:'))
n=len(str(t2))
print('The Armstrong numbers on this vary are: ')

for j in vary(t1, t2+1):
    i=j
    cube_sum = 0
    whereas i!= 0:
        ok = i % 10
        cube_sum += ok**n
        i = i//10
    if cube_sum == j:
                     print(j)

Output:

What’s the Armstrong 4-digit quantity?

An Armstrong four-digit quantity is nothing however a quantity that consists of 4 such digits whose fourth powers when added collectively give the quantity itself.  Listed below are two examples given under.

Instance-1: 1634

1⁴ + 6⁴ + 3⁴ + 4⁴ = 1634

Instance-2: 8208

8⁴ + 2⁴ + 0⁴ + 8⁴ = 8208

How do I discover my 4-digit Armstrong quantity?

Check out the next Python code to seek out all of the 4-digit Armstrong numbers:

print('4-digit Armstrong numbers are as follows: ')

for j in vary(1000, 9999):  #Setting the loop vary for 4-digit numbers
    i=j
    cube_sum = 0
    whereas i!= 0:
        ok = i % 10
        cube_sum += ok**4
        i = i//10
    if cube_sum == j:
        print(j)

Output:

Algorithm to examine if the given quantity is Armstrong or not

You’ll be able to undertake the next algorithm to examine if the given quantity is Armstrong quantity or not

Step-1: Take the quantity to be checked as enter from the consumer. 

Step-2: Decide the variety of digits within the quantity, say it’s n.

Step-3: Extract every digit from the quantity utilizing a loop. Now increase every of those digits to the ability n.

Step-4: Maintain including the n^th energy of those digits in a variable, say sum.

Step-5: As soon as, the sum of all of the n^th energy of the digits is obtained, the loop terminates and the, you’ll be able to examine if the worth of sum is the same as the quantity itself. If each are equal, then the quantity will probably be referred to as as an Armstrong quantity, else it’s not an Armstrong quantity.

Is 153 an Armstrong quantity?

Sure, 153 is a three-digit Armstrong quantity because the sum of third powers of 1, 5, and three makes the quantity 153 itself. 

1³ + 5³ + 3³ = 1 + 125 + 27

= 153

Printing a Collection of Armstrong Numbers Utilizing Python

Python Program to Print the First “N” Armstrong Quantity

N = int(enter('For getting the primary N Armstrong numbers, enter the worth of N: '))
c = 0
j = 1
print('The Armstrong numbers on this vary are: ')


whereas(c!=N):
    n=len(str(j))
    i=j
    sum = 0
    if(n>3):
        whereas i!= 0:
            ok = ipercent10
            sum += ok**n 
            i = i//10
        if sum == j:
            c+=1
            print(j)
            
    else:
        whereas i!= 0:
            ok=ipercent10
            sum += ok**3 
            i = i//10
        if sum == j:
            c+=1
            print(j)
    
    j+=1

Output:

Python Program to Print a Collection of Armstrong Numbers in a Pre-defined Vary

t1 = int(enter('Enter the minimal worth of the vary:'))
t2 = int(enter('Enter the utmost worth of the vary:'))
n=len(str(t2))
print('The Armstrong numbers on this vary are: ')

for j in vary(t1, t2+1): 
#t1 and t2 outline the vary
    i=j
    cube_sum = 0
    whereas i!= 0:
        ok = i % 10
        cube_sum += ok**n
        i = i//10
    if cube_sum == j:
                     print(j)
    else:
                       print('There are not any Armstrong numbers on this vary')

Output:

Python program to examine Armstrong Quantity

We are going to perceive implementing the above algorithm utilizing Python.

num = int(enter('Enter a quantity: '))
num_original =num2=num
sum1 = 0
cnt=0

whereas(num>0):
	cnt=cnt+1
	num=num//10

whereas num2>0:
   rem = num2% 10
   sum1 += rem ** cnt
   num2//= 10


if(num_original==sum1):
    print('Armstrong!!')
else:
    print('Not Armstrong!')

Output
Enter a quantity : 153
Armstrong!!

Enter a quantity : 134
Not Armstrong!

TEST THE CODE

num_original shops the preliminary worth of the enter, whereas num shops the variety of digits within the enter. Utilizing the variable num_2, we compute the sum of particular person digits raised to the ability of the rely variable respectively. Lastly, we evaluate the unique quantity and the sum obtained to examine for the property of an armstrong quantity

On this article we thought of the Armstrong Quantity, the algorithm and its implementation. For extra tutorials on python and machine studying keep tuned. You may also take up AI ML courses and energy forward in your profession. Tell us what you suppose within the remark part under.

 Armstrong quantity in python FAQs

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