Hex Color Code – Python HackerRank Solution

Problem: Hex Color Code

CSS colors are defined using a hexadecimal (HEX) notation for the combination of Red, Green, and Blue color values (RGB).

Specifications of HEX Color Code

■ It can have 3 or 6 digits.
■ Each digit is in the range of 0 to F. (1,2,3,4,5,6,7,8,9,0,A,B,C,D,E and F).
■  A-F letters can be lower case. (a,b,c,d,e and f are also valid digits).

Examples

```Valid Hex Color Codes
#FFF
#025
#F0A1FB

Invalid Hex Color Codes
#fffabg
#abcf
#12365erff
```

You are given N lines of CSS code. Your task is to print all valid Hex Color Codes, in order of their occurrence from top to bottom.

CSS Code Pattern

```Selector
{
Property: Value;
}
```

Input Format

The first line contains N, the number of code lines.
The next N lines contains CSS Codes.

Constraints

0 <N<50

Output Format

Output the color codes with ‘#‘ symbols on separate lines.

Sample Input

```11
#BED
{
color: #FfFdF8; background-color:#aef;
font-size: 123px;
}
#Cab
{
background-color: #ABC;
border: 2px dashed #fff;
}
```

Sample Output

```#FfFdF8
#aef
#f9f9f9
#fff
#ABC
#fff
```

Explanation

#BED and #Cab satisfy the Hex Color Code criteria, but they are used as selectors and not as color codes in the given CSS.

Hence, the valid color codes are:

#FfFdF8
#aef
#f9f9f9
#fff
#ABC
#fff

Note: There are no comments ( // or /* */) in CSS Code.

Code:

```#Hex Color Code Python HackerRank solution
import re

for _ in range(int(input())):
matches = re.findall(r':?.(#[0-9a-fA-F]{6}|#[0-9a-fA-F]{3})', input())
if matches:
print(*matches, sep='\n')
#Hex color code hackerrank solution```

Disclaimer: This problem is originally created and published by HackerRank, we only provide solutions to this problem. Hence, doesn’t guarantee the truthfulness of the problem. This is only for information purposes.