Basic operations in Python List

l=[]
n=int(raw_input('Enter the no of elements added to list:'))
for i in range(n):
      element=int(raw_input('Enter the elements:'))
      l.append(element)
print '\nNew List is ',
m=int(raw_input('\nEnter the no of elements added to list using insert:'))
for i in range(m):
      u=int(raw_input('Enter the index to be added'))
      u1=int(raw_input('Enter the element to be added'))
      l.insert(u,u1)
print '\nNew List after insert operation is:   ',l
ch=int(raw_input('\nPress 1 to pop the last element\nPress 2 to pop the element in a particular index\nEnter the choice: '))
if ch==1:
 l.pop()
 print '\nNew List after deletion is: ',l
elif ch==2:
 p=int(raw_input('Enter the element index to be deleted'))
 l.pop(p)
 print '\nNew List after deletion is: ',l
else:
  print '\nInvalid choice'
print ' \nList elements are sorted:  ',l

To add elements in list using insert

y=[]
n=int(raw_input('Enter the no of elements added to list:'))
index=0
for i in range(n):
      element=int(raw_input('Enter the elements:'))
      y.insert(index, element)
      index=index+1
print y

To add elements inside a list using append

l=[]
n=int(raw_input('Enter the no of elements added to list:'))
for i in range(n):
      element=int(raw_input('Enter the elements:'))
      l.append(element)
print l

To count the elements in a nested list with all elements are list

a=[[3, 4, 5,8, 8 ], [5, 6, 7], [7, 8, 9]]

def count(a):
 j=0
 n=0
 for b in a:
     j=len(b)
     n=n+j
 return n

t= count(a)
print "No elements in the nested list are:",t

Count of character repetition in a string

word=str(raw_input('Enter the string:'))
n=raw_input('Enter the character to search in string:')
c=0
for i in word:
    if i==n:
      c=c+1
print 'Number of times the character repeated is',  c

To check a string is palidrome or not

k=raw_input('Enter a string:  ')

if k==k[::-1]:
    print 'String is palidrome'
else:
    print 'String is not palidrome'

Find the Armstrong Number upto a number

# Compatible in Python 2.7
k=int(raw_input('Enter the range of number:'))
for n in range(k):
 sum=0
 temp=n
 y=len(str(n))
 while(n>0):
   R=n%10
   V=R**y
   sum=sum+V
   n=n/10
 if (sum==temp):
   print 'Armstrong  Number',temp

Fibonacci sequence using functions for N numbers


# Compatible in Python 2.7

def recur_fibo(n):
   if n <= 1:
       return n
   else:
       return(recur_fibo(n-1) + recur_fibo(n-2))


nterms = int(input("How many terms? "))

if nterms <= 0:
   print "Plese enter a positive integer"
else:
   print "Fibonacci sequence:"
   for i in range(nterms):
       print recur_fibo(i)

Multiplication Table

# Compatible in Python 2.7

num = int(raw_input("Display multiplication table of? "))
for i in range(1, 21):
       print num,'x',i,'=',num*i

Program to check the number is palindrome

# Compatible in Python 2.7

Number = int(raw_input("Please Enter any Number: "))
Temp=Number    # Number is stored to a temporary variable
Reverse = 0          # Initialize the reverse value to overcome garbage value storage
if Number<0:
    print 'Number is negative'
elif Number ==0:
    print 'Reverse Number is',Number
elif Number>0:
    while(Number > 0):
      Reminder = Number %10
      Reverse = (Reverse *10) + Reminder
      Number = Number /10
    print 'Reverse of a Number is',Reverse
else:
    exit()

if Temp==Reverse:
    print 'The number is palidrome'
else:
    print 'The number is not palidrome'