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  1. Prepare
  2. Python
  3. Collections
  4. collections.Counter()
  5. Discussions

collections.Counter()

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  • kamrani_mohsen01
     + 0 comments
    from collections import Counter
# Enter your code here. Read input from STDIN. Print output to STDOUT
x = int(input())
sizes = map(int, input().split())
n = int(input())
avail = Counter(sizes)
sales = 0
for i in range(n):
    order = list(map(int, input().split()))
    size = order[0]
    if size in avail.keys() and avail[size] > 0:
        sales += order[1]
        avail[size] -= 1

print(sales)

  • vishnupillai704
     + 0 comments

    from collections import Counter list1 = [] def test(customer_shoe_size,price): if customer_shoe_size in shoe_sizes.keys(): value = shoe_sizes.get(customer_shoe_size) shoe_sizes.subtract([customer_shoe_size]) if value > 0: list1.append(int(price))

    def sum_(): final = list(map(int,list1)) print(sum(final))

    if name == "main": global shoe_sizes no_of_shoes = int(input()) shoe_sizes = Counter((map(str,input().split()))) no_of_customers = int(input()) for i in range(no_of_customers): customer_shoe_size , price = input().split() test(customer_shoe_size,price) sum_()

  • ashiqueali
     + 0 comments

    X = int(input()) tot_inv = list(map(int, input().split()))

    from collections import Counter

    inventory = Counter(tot_inv)

    N = int(input())

    raghu_earn = 0

    for _ in range(N):

    size_price = input().split()
size = int(size_price[0])
price = int(size_price[1])

    if inventory[size]>0:
    raghu_earn+=price
    inventory[size]-=1

    print(raghu_earn)

    if inventory[size]>0:
    raghu_earn+=price
    inventory[size]-=1

    print(raghu_earn)

  • nicodasilva2
     + 0 comments

    from collections import Counter

    def calc_earnings(shoes, customers):

    earnings = 0

for c in customers:
    if c[0] not in shoes: continue

    shoes[c[0]] -= 1
    earnings += c[1]

    if (shoes[c[0]] <= 0): del shoes[c[0]]

print(earnings)

    if name=='main':

    input() # We really don't use this info (number of shoes).
shoes = Counter(map(int, input().split()))
n = int(input())

customers = []

for _ in range(n):
    shoe_size, price = map(int, input().split())
    customers.append((shoe_size, price))

calc_earnings(shoes, customers)

  • yashdeora98294
     + 0 comments

    Here is HackerRank collection.counter() in python solution - https://programmingoneonone.com/hackerrank-collections-counter-solution-in-python.html