Related Articles

# Python | Numbers in a list within a given range

• Difficulty Level : Easy
• Last Updated : 21 Nov, 2018

Given a list, print the number of numbers in the given range. Examples:

```Input : [10, 20, 30, 40, 50, 40, 40, 60, 70] range: 40-80
Output : 6

Input : [10, 20, 30, 40, 50, 40, 40, 60, 70] range: 10-40
Output : 4
```

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Multiple Line Approach:

Traverse in the list and check for every number. If the number lies in the specified range, then increase the counter. At the end of traversal, the value of the counter will be the answer for the number of numbers in specified range.

Below is the Python implementation of the above approach

 `# Python program to count the ``# number of numbers in a given range``# using traversal and mutliple line code`` ` `def` `count(list1, l, r):``    ``c ``=` `0` `    ``# traverse in the list1``    ``for` `x ``in` `list1:``        ``# condition check``        ``if` `x>``=` `l ``and` `x<``=` `r:``            ``c``+``=` `1` `    ``return` `c``     ` `# driver code``list1 ``=` `[``10``, ``20``, ``30``, ``40``, ``50``, ``40``, ``40``, ``60``, ``70``]``l ``=` `40``r ``=` `80` `print` `count(list1, l, r)`

Output:

```6
```

Single Line Approach:

We can write a single line for traversal and checking condition together:

`x for x in list1 if l <= x <= r`

The return value(true) of the condition check is stored in a list, and at the end the length of the list returns the answer.

Below is the Python implementation of the above approach

 `# Python program to count the ``# number of numbers in a given range`` ` `def` `count(list1, l, r):``     ` `    ``# x for x in list1 is same as traversal in the list``    ``# the if condition checks for the number of numbers in the range ``    ``# l to r ``    ``# the return is stored in a list``    ``# whose length is the answer``    ``return` `len``(``list``(x ``for` `x ``in` `list1 ``if` `l <``=` `x <``=` `r))`` ` `# driver code``list1 ``=` `[``10``, ``20``, ``30``, ``40``, ``50``, ``40``, ``40``, ``60``, ``70``]``l ``=` `40``r ``=` `80` `print` `count(list1, l, r)`

Output:

```6
```

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up