# Python program to print all negative numbers in a range

• Difficulty Level : Easy
• Last Updated : 13 Mar, 2023

Given the start and end of a range, write a Python program to print all negative numbers in a given range.

Examples:

Input: a = -4, b = 5
Output: -4, -3, -2, -1

Input: a = -3, b= 4
Output: -3, -2, -1

Method: Print all the negative numbers using a single-line solution.

Print all negative numbers using for loop. Define the start and end limits of the range. Iterate from start range to end range using for loop and check if num is less than 0. If the condition satisfies, then only print the number.

## Python3

 # Python code# To print all negative numbers in a given range     def negativenumbers(a,b):   # Checking condition for negative numbers   # single line solution   out=[i for i in range(a,b+1) if i<0]   # print the all negative numbers  print(*out)   # driver code # a -> start range a=-4 # b -> end range b=5 negativenumbers(a,b)

Output

-4 -3 -2 -1

Time Complexity: O(n)
Auxiliary Space: O(1)

Example #1: Print all negative numbers from the given list using for loop Define start and end limit of the range. Iterate from start till the range in the list using for loop and check if num is less than 0. If the condition satisfies, then only print the number.

## Python3

 # Python program to print negative Numbers in given range  start, end = -4, 19  # iterating each number in listfor num in range(start, end + 1):          # checking condition    if num < 0:        print(num, end = " ")

Output

-4 -3 -2 -1

Example #2: Taking range limit from user input

## Python3

 # Python program to print negative Numbers in given range  start = int(input("Enter the start of range: "))end = int(input("Enter the end of range: "))  # iterating each number in listfor num in range(start, end + 1):          # checking condition    if num < 0:        print(num, end = " ")

Output:

Enter the start of range: -15
Enter the end of range: 5
-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1

## Python3

 # Python code To print all negative # numbers in a given range using lambda function  # inputsa=-4;b=5 li=[]for i in range(a,b):    li.append(i)# printing negative numbers using the lambda functionnegative_num = list(filter(lambda x: (x<0),li))  print(negative_num)

Output

[-4, -3, -2, -1]

Time Complexity: O(n)
Auxiliary Space: O(n), where n is length of list

## Python3

 a=-4;b=5;l=[]for i in range(a,b+1):  l.append(i)print([a for j,a in enumerate(l) if a<0])

Output

[-4, -3, -2, -1]

## Python3

 a=-4;b=5print([i for i in range(a,b+1) if i<0])

Output

[-4, -3, -2, -1]

## Python3

 a=-4;b=5 for i in range(a,b+1):  if i>=0:    pass   else:    print(i,end=" ")

Output

-4 -3 -2 -1

## Python3

 #Recursive function to print Negative numbersdef PrintNegative(itr,end):  if itr == end: #Base Condition    return  if itr < 0:  #checking Negative or not    print(itr,end=" ")  PrintNegative(itr+1,end)  #Recursive function call  returna = -5b = 5PrintNegative(a,b)

Output

-5 -4 -3 -2 -1

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