Question: Swap Two Number

Program

a=25
b=10

#for swap
a,b=b,a
print(a)
print(b)

output:

10
25

Question: Get largest number from 2 numbers using ternary operator

Syntax:

<expression 1> if <condition> else <expression 2>

Program:

num1=50
num2=40
large=num1 if num1>num2 else num2
print(large)

Output:

Question: Sort string numbers in array

Program:

#using list comprehension
lst=["6","8","3","9"]
lst=[int(i) for i in lst]
lst.sort()
print(lst)

#using map
lst=["6","8","3","9"]
lst=list(map(int,lst))
lst.sort()
print(lst)

#using lambda
lst=["6","8","3","9"]
lst=sorted(lst,key=lambda x:int(x))
print(lst)

Output:

[3, 6, 8, 9]
[3, 6, 8, 9]
['3', '6', '8', '9']

uestion : Find N-th Number PrimeNumber

Program

L = [2,3]
n = int(input())
k = 4

while k>0:
      if len(L) == n:
             break
      for i in L:
             if k%i==0:
                    break
      else:
             L.append(k)
      k+=1
    
print(L[-1])

Output:

10
29

Question 1

Write a program which will find all such numbers which are divisible by 7 but are not a multiple of 5,
between 2000 and 3200 (both included).
The numbers obtained should be printed in a comma-separated sequence on a single line.

Hints:

Consider use range(#begin, #end) method

Solution using For Loop

# Using For Loop and List
result=[]
for i in range(2300,3201):
  if i%7==0 and i%5!=0:
    result.append(str(i))
print(",".join(result))

Solution Using List Comprehension

#Using List Comprehension
result=[str(i) for i in range(2300,3201) if i%7==0 and i%5!=0]
print(",".join(result))

Output

2303,2317,2324,2331,2338,2352,2359,2366,2373,2387,2394,2401,2408,
2422,2429,2436,2443,2457,2464,2471,2478,2492,2499,2506,2513,2527,
2534,2541,2548,2562,2569,2576,2583,2597,2604,2611,2618,2632,2639,
2646,2653,2667,2674,2681,2688,2702,2709,2716,2723,2737,2744,2751,
2758,2772,2779,2786,2793,2807,2814,2821,2828,2842,2849,2856,2863,
2877,2884,2891,2898,2912,2919,2926,2933,2947,2954,2961,2968,2982,
2989,2996,3003,3017,3024,3031,3038,3052,3059,3066,3073,3087,3094,
3101,3108,3122,3129,3136,3143,3157,3164,3171,3178,3192,3199

Question 2:

Write a program which can compute the factorial of a given numbers.

Hint:

Using Recursion
Using For Loop
Using Math Module
Using Stack

Solution Using Recursion

#Factorial Using Recursion
def Fact(number):
  if number==0:
    return 1
  else:
    return number * Fact(number-1)
    
fact=5
print(Fact(fact))

Solution Using For Loop

#Factorial Using For Loop
def Fact(number):
  if number==0:
    return 1
  else:
    fact=1
    for i in range(1,number+1):
      fact=fact*i
    return fact

fact=5
print(Fact(fact))

Solution Using Math Module

#Factorial using math
import math
def Fact(number):
  return math.factorial(number)

fact=5
print(Fact(fact))

Solution Using Stack

#Factorial Using Stack
class STACKS:
  def __init__(self):
      #Initialize Empty Stack
      self.stack=[]
      
  def Push(self,data):
      '''This Will accept Element And Append to existing stack'''
      self.stack.append(data)

  def Pop(self):
      '''This will Remove the element from top of the stack'''
      return self.stack.pop()

  def Fact(self,number):
      '''Get The Factorial of Given Number'''
      self.Push(1)
      for i in range(1,number+1):
          self.Push(self.Pop()*i)
      return self.Pop()    

#Initialize The Stack Object    
s1=STACKS()
number=5
print(s1.Fact(number))

Output:

Question 3:

With a given integral number n, write a program to generate a dictionary that contains (i, i*i) 
such that is an integral number between 1 and n (both included). and then the program should 
print the dictionary.
Suppose the following input is supplied to the program:
8
Then, the output should be:
{1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64}

Solution Using For Loop

#Using For Loop
n=int(input("Enter Number:"))
res=[]
for i in range(1,n+1):
  result={}
  result[i]=i*i
  res.append(result)
for r in res:
  print(r,end=",")

Solution Using List Comprehension

#Using List Comprehension
n=int(input("Enter Number:"))
res=[{i:i*i} for i in range(1,n+1)]
print(res)

Question 4

With a given integral number n, write a program to generate a dictionary that 
contains (i, i*i) such that is an integral number between 1 and n (both included). 
and then the program should print the dictionary.

Suppose the following input
 is supplied to the program:
8
Then, the output should be:
{1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64}

Solution using For loop(aliyu)

n=int(input("enter number:"))
my_dict={}
for i in range(1,n+1):
    my_dict[i]=i*i
print(my_dict)

Solution(deepak)

my_num = int(input ("enter number"))
my_dict = {i:i*i for i in range(1,my_num+1)}
print(my_dict)

Solution(suraj)

a={i:i*i for i in range(1,int(input("Enter number"))+1)}
Print(a)

Questions 5

Write a program which accepts a sequence of comma-separated numbers from console and generate a list and a 
tuple which contains every number.Suppose the following input is supplied to the program:
34,67,55,33,12,98
Then, the output should be:
['34', '67', '55', '33', '12', '98']
('34', '67', '55', '33', '12', '98')

Using Regular Expression(aliyu)

import re
num = input()
my_list = re.findall(r'[\d]+', num)
my_tuple = tuple(my_list)
print(my_list)
print (my_tuple)

Solution More Optimized(suraj)

n=eval(input("Enter numbers"))
print(list(n),n)

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