Page 250 - Ai_V1.0_Class9
P. 250

Commands                                           Output

                  #display the digits of a number in a reverse order                    Enter a number 594

                  num=int(input("Enter a number "))                                     495

                  while num>0:
                        r=num%10

                        print(r, end="")
                        num//=10


                Program 11:  To print the sum of first five natural numbers.

              Algorithm                                      Flowchart
               Step 1   Start                                                 START
               Step 2   num=1
                                                                          Sum=0, Num=1
               Step 3   sum=0
               Step 4   while num is less than 6

                            sum=sum + num                                       Is      No       Display
                            num = num + 1                                    Num < 6?            "Sum"
               Step 5   Display "Sum is ", sum
                                                                                  Yes
               Step 6   Stop
                                                                         Sum = Sum + Num                     STOP
              Source Code:

              num=1
                                                                          Num = Num + 1
              sum=0
              while num<6:

                  sum=sum+num
                  num=num+1
              print("The sum of first five natural numbers is",sum)
              Output:

              The sum of first five natural numbers is 15

                       Lists in Python


              A list in Python is a collection of items that are ordered and mutable (changeable). It can contain elements of
              different data types, such as strings, integers, floats, objects, or even other lists. Each value in a list is called an
              element, and each element is indexed based on its position in the list. The index starts at 0 for the first element,
              1 for the second element, and so on. The number of elements in a list determines its length. Lists are defined by
              enclosing the elements within square brackets [], with each element separated by a comma. For example,
              my_list = [1, 2, 3, 'hello', 5.0]

              Lists are mutable, meaning that you can change the elements in a list after it has been created. You can add
              elements to a list, modify existing elements, or remove elements from a list.



                    248     Artificial Intelligence Play (Ver 1.0)-IX
   245   246   247   248   249   250   251   252   253   254   255