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Hex Color Code Hacker Rank Solution – Queslers

Problem : Hex Color Code Hacker Rank Solution

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 must start with a ‘#’ symbol.
■ It can have 3 or digits 6.
■ 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).

Example :

``````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.

• 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;
background: -webkit-linear-gradient(top, #f9f9f9, #fff);
}
#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.

Hex Color Code Hacker Rank Solution in python 2

``````import re
reg1="{[^}]*}"
reg2="""(#(?:[0-9A-Fa-f]){3}|#(?:[0-9A-Fa-f]){6})[^0-9a-fA-F]"""
n=input()
s=""
for i in range(n): s+=raw_input()
x=re.findall(reg1,s)
for l in x:
y=re.findall(reg2,l)
#print l
for z in y: print z``````

Hex Color Code Hacker Rank Solution in python 3

``````# Enter your code here. Read input from STDIN. Print output to STDOUT
import re
N=int(input())

for i in range(0,N):
s=input()

x=s.split()

if len(x)>1  and  '{' not in x:
x=re.findall(r'#[a-fA-F0-9]{3,6}',s)
[print(i) for  i in x]
``````

Hex Color Code Hacker Rank Solution in pypy

``````import re, sys

N = int(raw_input())
for _ in range(N):
line = raw_input().strip()
codes = [j for j in re.findall('[\s:](#[a-f0-9]{6}|#[a-f0-9]{3})[\s:;,)]', line, re.I)]
for code in codes:
print code``````

Hex Color Code Hacker Rank Solution in pypy 3

``````# Enter your code here. Read input from STDIN. Print output to STDOUT

import re

in_block = False
for x in range(int(input())):
line = input()
if '{' in line:
in_block = True
continue
if '}' in line:
in_block = False
continue

if in_block == True:
m = re.findall(r'(#[a-fA-F0-9]{3,6})', line)
if m:
print(*m, sep='\n')
``````
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