HackerRank Hex Color Code solution in Python

HackerRank Hex Color Code solution in Python – In this Hex Color Code problem in Python programming, 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 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 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

HackerRank Hex Color code 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 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]

Problem solution in pypy programming.

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

Problem solution in pypy3 programming.

# 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')