| A simple python program to reverse a given string. Here we are goin to use reversed() function. We can't directly print reversed as it is not a string but it returns type 'reversed'. So we will join it to a empty string. Syntax : ''.join(reversed(str)) Refer below for screenshot and program, |
input_string = str(input('Enter any string : ')) print("Reversed String is :" + ''.join(reversed(input_string)))
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| Python - Reverse a string using reversed() function |
| A simple python program to reverse a string. Here we use slice operation to reverse a string. Syntax : str[begin:end:step]. So by leaving begin and end, and giving a step of -1, it reverses a string. Refer below for screenshot and program, |
input_string = str(input('Enter any string : ')) print("Reversed String is : " + input_string[::-1])
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| Python - String reverse using slice operation |
| A simple python program to reverse a given string. Here we are not going to use slice operation or reversed function, which easily can reverse a string without lot of code. we are going to discuss about them in here : using slice and using reversed function. The logic here is we read a string, read every character from the end and add it to new string. Refer below for screenshot and program, |
input_string = str(input('Enter any string : ')) def reverse(string): i = len(string) rev = "" while i != 0: rev = rev + string[i - 1] i -= 1 return rev print("Reversed String is :" + reverse(input_string))
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| Python - String reverse |
In this post we will learn about Lists in python . Here we perform the basic operations on list like adding items to a list , appending an item at the end of the list , modify the value of the item in the list , removing an item from the list , removing all the items from the list and some slicing operations. |
lst = ['abc', 'def', 'ghi', 'jklm', 'nopqr', 'st', 'uv', 'wxyz', '23', 's98', '123', '87'] # prints the length of the list print('Length of the list is : ', len(lst)) # appends an item to the list lst.append('sdd') print('\nThe list appended a new element "sdd" at the end \n', lst) # changes the value of an item in a list lst[0] = 'aaa' print('\nThe value of the first element in the list is changed to "aaa" \n', lst) # Slicing # shows only items starting from 0 upto 3 print('\nList showing only items starting from 0 upto 3\n', lst[:3]) # shows only items starting from 4 to the end print('\nList showing only items starting from 4 to the end\n', lst[4:]) # shows only items starting from 2 upto 6 print('\nList showing only items starting from 2 upto 6\n', lst[2:6]) # reverse all items in the list print('\nList items reversed \n', lst[::-1]) # removing items from list lst[:1] = [] print('\nFirst element is removed from the list \n', lst) # removing whole list lst[:] = [] print('\nComplete list removed \n', lst)
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| Python Lists - Add , Append , Modify ,Remove , Slice |
This is a Python program which calculates the sum of all the elements in a list. |
lst = [] num = int(input('How many numbers: ')) for n in range(num): numbers = int(input('Enter number ')) lst.append(numbers) print("Sum of elements in given list is :", sum(lst))
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| Python - Sum of all items in a list |
This is a Python program which finds out the smallest and largest element in the list.Here we use 2 functions min() and max() to check for the smallest and largest element respectively. |
lst = [] num = int(input('How many numbers: ')) for n in range(num): numbers = int(input('Enter number ')) lst.append(numbers) print("Maximum element in the list is :", max(lst), "\nMinumim element in the list is :", min(lst))
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| Python - Largest and Smallest element in a list |
num1 = int(input('Enter First number : ')) num2 = int(input('Enter Second number : ')) num3 = int(input('Enter Third number : ')) def largest(num1, num2, num3): if (num1 > num2) and (num1 > num3): largest = num1 elif (num2 > num1) and (num2 > num3): largest = num2 else: largest = num3 print("The largest of the 3 numbers is : ", largest) def smallest(num1, num2, num3): if (num1 < num2) and (num1 < num3): smallest = num1 elif (num2 < num1) and (num2 < num3): smallest = num2 else: smallest = num3 print("The smallest of the 3 numbers is : ", smallest) largest(num1, num2, num3) smallest(num1, num2, num3)
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| Python - Biggest and Smallest of 3 numbers |
This a Python program to check whether a given number is armstrong or not . |
num = int(input('Enter any number : ')) sum = 0 copy = num while copy > 0: remainder=copy%10 sum += remainder ** 3 copy //= 10 if num == sum: print(num,"is an Armstrong number") else: print(num,"is an not Armstrong number")
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| Python - Armstrong or not |
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| Python - Armstrong or not |
This is a Python program which checks whether a number is palindrome or not . |
num = int(input('Enter any number : ')) if str(num) == str(num)[::-1]: print("Given number is a PALINDROME number") else: print("Given number is NOT a palindrome number")
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| Python - Palindorme or not |
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| Python - Palindorme or not |
num = int(input('Enter any number : ')) print ('Reverse of the given number is : ',str(num)[::-1])
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| Python - Reverse of a number |
num = int(input('How many numbers: ')) sum = 0 for n in range(num): numbers = int(input('Enter number ')) sum = sum + numbers avg = sum/num print('Average of ', num , 'numbers is :',avg)
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| Python - Average of N numbers |
num = int(input('Enter a number: ')) if(num % 2 ==0): print(num , "is EVEN") else: print(num , "is ODD")
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| Python - Even or Odd |
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| Python - Even or Odd |
This is basic python program for all starters. It simply takes two integer numbers adds , subtracts , multiples and divides them. |
num1 = int(input('Enter First number: ')) num2 = int(input('Enter Second number ')) add = num1 + num2 dif = num1 - num2 mul = num1 * num2 div = num1 / num2 print('Sum of ' ,num1 ,'and' ,num2 ,'is :',add) print('Difference of ',num1 ,'and' ,num2 ,'is :',dif) print('Product of' ,num1 ,'and' ,num2 ,'is :',mul) print('Division of ',num1 ,'and' ,num2 ,'is :',div)
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| Python - Arithematic Operations |