Example programs in Python: Fibonacci Series

 Writing Fibonacci Series in Python using if else statement and for loop

Example:1

x=int(input("enter the number of terms "))

y=[]

if x==1:

    z=0

    y.append(z)

    print(y)

elif x==2:

    z=0

    q=1

    y.append(z)

    y.append(q)

    print(y)

else:

    z=0

    q=1

    y.append(z)

    y.append(q)

    for i in range(3,x+1):        

        l=y[i-3]

        m=y[i-2]

        k = l + m

        #k=y[i-1]

        y.append(k)

print(y)

Output

enter the number of terms 10

[0, 1, 1, 2, 3, 5, 8, 13, 21, 34]

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Example 2: Fibonacci Series

x=int(input("Enter the number of terms: "))

a=0

b=1

print(a,b,end=" ")

for i in range(2,x):

    c = a+b

    print(c,end=" ")

    a=b

    b=c

   

Output

0 1 1 2 3 5 8 13 21 34

Python Example Program: Star Pyramid

 Writing Star Pyramid Program using Function in Python

Example:

x="*"

def function(y):

    i=1

    for i in range(y+1):

        z=i*x

        print(f"{z} ")

function(5)  

Output

* ** *** **** *****

Python Example Program : Palindrome

 Checking whether given word or sequence of number is palindrome

Example 1

word = input("Enter a word to check its palindrome: ")

word=word.lower()

y=len(word)

z=y-1

i=0

while (i<y):

   

    if(word[i]!=word[z]):

        print(f"{word} is not a palindrome")

        break

    i=i+1

    z=z-1    

else:

   

    print(f"{word} is a palindrome")

Output

Enter a word to check its palindrome: Madam

madam is a palindrome

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Example 2 : Finding Palindrome in reversing the string

a="mom"

print(f"a= {a}")

b=a[::-1] #it will reverse

print(f"After reversing, b= {b}")

if a==b:

    print(f"{a} is a palindrome")

else:

    print(f"{a} is not a palindrome")

Output

a= mom After reversing, b= mom mom is a palindrome

Python Example Program : Finding Factors

Finding all the possible factors of an integer in Python

Example

x=int(input("Enter a number to find all the possible factors: "))

y=[]

for i in range(1,x+1):

    if x%i == 0:

        y.append(i)

print(y)

Output

Enter a number to find all the possible factors: 400

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400]

Python Example programs : Prime Number

 Finding a number is prime or not in python

Example1

x = int(input("enter a number: "))

i=2

while (i<x):

    if (x%i == 0):

        print(f"{x} is not a prime number")

        break

     

    i=i+1

else:

        print(f"{x} is  a prime number")

Output

enter a number: 7727

7727 is a prime number

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Example 2

x = int(input("enter a  number: "))

i=2

if x <= 0:

       print(f"{x} is not a prime number")

else:

    while (i<x):

        if (x%i == 0):

          print(f"{x} is not a prime number")

          break

     

        i=i+1

    else:

        print(f"{x} is  a prime number")

Output

enter a positive integer number: 0

0 is not a prime number

Python Example Problems : Odd and Even Numbers

 Finding even and odd numbers using while loop in Python

Example 1

i=1

x=[]

y=[]

while (i <= 30):

    if i%2 == 0:

        x.append(i)

       

    else :

        y.append(i)

       

    i = i + 1  

print(f"even numbers are {x} ")    

print(f" odd number are {y} ")

Output

even numbers are [2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30] odd number are [1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29]

Example 2

Finding odd and even numbers in a specified list

n = int(input("Enter a number till which we need to list out odd and even numbers: "))

i=1

x=[]

y=[]

while (i <= n):

    if i%2 == 0:

        x.append(i)

       

    else :

        y.append(i)

       

    i = i + 1  

print(f"even numbers are {x} ")    

print(f" odd number are {y} ")

output Enter a number till which we need to list out odd and even numbers: 10

even numbers are [2, 4, 6, 8, 10] odd number are [1, 3, 5, 7, 9]