Program Example

 # program to check if a number is prime number
def isPrime(n):
   if (n <= 1):
      return False

   # Check from 2 to n-1
   for i in range(2, n):
      if (n % i == 0):
         return False
   return True

if isPrime(10):
   print("true")
else:
   print("false")

# Python program to check string is palindrome  or not
x = "malayalam"
w = ""
for i in x:
   w = i + w
if (x == w):
   print("Yes")
else:
    print("No")

# Python program to reverse a string
w=""
value = input("Please enter a string:\n")
print("You entered",type(value))
for i in value :
    w = i + w
print(w)

def reversestr(string):
    strlist = []
    i = len(string) - 1
    while (i >= 0):
        strlist.append(string[i])
        i -= 1
    return ''.join(strlist)
print(reversestr('Vinayak'))

# Function to reverse A[] from start to end
def reverseList(A, start, end):
    while start < end:
        A[start], A[end] = A[end], A[start]
        start += 1
        end -= 1

# Driver function to test above function
A = [1, 2, 3, 4, 5, 6,7,8]
print(A)
n=(len(A)) - 1
reverseList(A, 0, n)
print("Reversed list is")
print(A)

# A Python program to find the first, 
# second and third minimum element 
# in an array 

MAX = 100000

def Print3Smallest(arr, n):
    firstmin = MAX
    secmin = MAX
    thirdmin = MAX

    for i in range(0, n):

        if arr[i] < firstmin:
            thirdmin = secmin
            secmin = firstmin
            firstmin = arr[i]

        elif arr[i] < secmin:
            thirdmin = secmin
            secmin = arr[i]

        elif arr[i] < thirdmin:
            thirdmin = arr[i]

    print("First min = ", firstmin)
    print("Second min = ", secmin)
    print("Third min = ", thirdmin)

# driver program 
arr = [4, 9, 1, 32, 3]
n = len(arr)
Print3Smallest(arr, n)

# Python3 program to count the
# number of occurrences of a
# particular digit in a number

# Function to count the occurrences
# of the digit D in N
def countOccurrances(n, d):
   count = 0

   # Loop to find the digits of N
   while (n > 0):

      # check if the digit is D
      if(n % 10 == d):
         count = count + 1

      n = n // 10

   # return the count of the
   # occurrences of D in N
   return count

# Driver code
d = 1
n = 214215421
print(countOccurrances(n, d))

Linear Search

def search(arr,n,x):
    for i in range (0, n):
       if(arr[i] == x):
        return i
        return -1

arr= [2,3,5,10,8,3]
x=10
n=len(arr)

result = search(arr,n,x)

if (result== -1):
    print("Elemnt is not persent")
else:
    print("element persent into list",result)