Python program to print all even numbers in a range
Given starting and end points, write a Python program to print all even numbers in that given range.
Example:
Input: start = 4, end = 15 Output: 4, 6, 8, 10, 12, 14 Input: start = 8, end = 11 Output: 8, 10
Example #1: Print all even numbers from given list using for loop Define start and end limit of range. Iterate from start till the range in the list using for loop and check if num % 2 == 0. If the condition satisfies, then only print the number.
Python3
for num in range ( 4 , 15 , 2 ): #here inside range function first no denotes starting, second denotes end and third denotes the interval print (num) |
Output
4 6 8 10 12 14
Example #2: Taking range limit from user input
Python3
# Python program to print Even Numbers in given range start = int ( input ( "Enter the start of range: " )) end = int ( input ( "Enter the end of range: " )) # iterating each number in list for num in range (start, end + 1 ): # checking condition if num % 2 = = 0 : print (num, end = " " ) |
Output:
Enter the start of range: 4 Enter the end of range: 10 4 6 8 10
Example#3 Taking range limit user input and uses skip sequence number in range function which generates the all-even number.
Python3
# Python program to print Even Numbers in given range start = int ( input ( "Enter the start of range: " )) end = int ( input ( "Enter the end of range: " )) #creating even starting range start = start + 1 if start& 1 else start #create a list and printing element #contains Even numbers in range [ print ( x ) for x in range (start, end + 1 , 2 )] |
Output:
Enter the start of range: 4 Enter the end of range: 10 4 6 8 10
Method: Using recursion
Python3
def even(num1,num2): if num1>num2: return print (num1,end = " " ) return even(num1 + 2 ,num2) num1 = 4 ;num2 = 15 even(num1,num2) |
Output
4 6 8 10 12 14
Method: Using the lambda function
Python3
# Python code To print all even numbers # in a given range using the lambda function a = 4 ;b = 15 li = [] for i in range (a,b + 1 ): li.append(i) # printing odd numbers using the lambda function even_num = list ( filter ( lambda x: (x % 2 = = 0 ),li)) print (even_num) |
Output
[4, 6, 8, 10, 12, 14]
Method: Using list comprehension
Python3
x = [i for i in range ( 4 , 15 + 1 ) if i % 2 = = 0 ] print ( * x) |
Output
4 6 8 10 12 14
Method: Using enumerate function
Python3
a = 4 ;b = 15 ;l = [] for i in range (a,b + 1 ): l.append(i) print ([a for j,a in enumerate (l) if a % 2 = = 0 ]) |
Output
[4, 6, 8, 10, 12, 14]
Method: Using pass
Python3
a = 4 ;b = 15 for i in range (a,b + 1 ): if i % 2 ! = 0 : pass else : print (i,end = " " ) |
Output
4 6 8 10 12 14
Method: Using Numpy.Array
Python3
# Python code To print all even numbers # in a given range using numpy array import numpy as np # Declaring Range a = 4 ;b = 15 li = np.array( range (a, b + 1 )) # printing odd numbers using numpy array even_num = li[li % 2 = = 0 ]; print (even_num) |
Output:
[ 4 6 8 10 12 14]
Method: Using bitwise and operator
Python3
# Python program to print even Numbers in given range #using bitwise & operator start, end = 4 , 19 # iterating each number in list for num in range (start, end + 1 ): # checking condition if not (num & 1 ): print (num, end = " " ) #this code is contributed by vinay pinjala. |
Output
4 6 8 10 12 14 16 18
Time Complexity: O(n)
Auxiliary Space:O(1)
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