Python program to print negative numbers in a list

In this article, we will learn about the solution and approach to solve the given problem statement.

Problem statement

Given a list iterable, we need to print all the negative numbers in the list.

Here we will be discussing three approaches for the given problem statement.

Approach 1 − Using enhanced for loop

Example

list1 = [-11,23,-45,23,-64,-22,-11,24]
# iteration
for num in list1:
   # check
   if num < 0:
      print(num, end = " ")

Output

-11 -45 -64 -22 -11

Approach 2 − Using filter & lambda function

Example

list1 = [-11,23,-45,23,-64,-22,-11,24]
# lambda exp.
no = list(filter(lambda x: (x < 0), list1))
print("Negative numbers in the list: ", no)

Output

Negative numbers in the list: [-11 -45 -64 -22 -11]

Approach 3 − Using list comprehension

Example

list1 = [-11,23,-45,23,-64,-22,-11,24]
#list comprehension
nos = [num for num in list1 if num < 0]
print("Negative numbers in the list: ", nos)

Output

Negative numbers in the list: [-11 -45 -64 -22 -11]

Conclusion

In this article, we learned about the approach to print negative numbers in the input list.