The qualification round just ended. Since I was busy in the weekend (it was Chinese New Year), I didn't have the chance to look into the problems until Monday, 2 hours before the round ended.
In a panic, I just picked one of the problems and tried to solve it.
I choose the Alphabet Soup for no particular reason. OK, maybe because it has a character named Alfredo Spaghetti, and because I love both Alfredo sauce and Spaghetti in general.
Here's how I solved it in Python.
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file = open("alphabet_soup.txt")
number_of_lines = int(file.readline())
line = 0
print ''
while line < number_of_lines :
line = line + 1
test_case = file.readline()
chars = {}
for character in test_case:
if character != ' ':
if chars.has_key(character):
chars[character] = chars[character] + 1
else:
chars[character] = 1
h = chars['H'] if chars.has_key('H') else 0
a = chars['A'] if chars.has_key('A') else 0
c = chars['C'] if chars.has_key('C') else 0
k = chars['K'] if chars.has_key('K') else 0
e = chars['E'] if chars.has_key('E') else 0
r = chars['R'] if chars.has_key('R') else 0
u = chars['U'] if chars.has_key('U') else 0
p = chars['P'] if chars.has_key('P') else 0
i = 0
can_continue = True
while can_continue :
h = h-1
a = a-1
c = c-2
k = k-1
e = e-1
r = r-1
u = u-1
p = p-1
if h >=0 and a >=0 and c >=0 and k >=0 and e >=0 and r >=0 and u >=0 and p >=0 :
i = i + 1
else:
can_continue = False
print 'Case #%s: %s' % (line, i)
For example input:
5
WELCOME TO FACEBOOK HACKERCUP
CUP WITH LABEL HACKERCUP BELONGS TO HACKER
QUICK CUTE BROWN FOX JUMPS OVER THE LAZY DOG
MOVE FAST BE BOLD
HACK THE HACKERCUP
Produces this output:
Case #1: 1
Case #2: 2
Case #3: 1
Case #4: 0
Case #5: 1
Did you participate in Facebook Hacker Cup? If so, what was your approach in solving this problem?
