Practice>Python>Collections>Collections.OrderedDict()

Collections.OrderedDict()

Problem link : https://www.hackerrank.com/challenges/py-collections-ordereddict/problem

Difficulty : easy

Tip

• the sequence of input should be ordered, so it is good to practice how to use OrderedDict()
• Utilize rpartition() or rfind() to split name and price
• Check the name is existed in orderedDict
• If it is, add price
• If not, add new name and price

Solution

from collections import OrderedDict od = OrderedDict() n = int(input()) for i in range(n): s = input() idxLast = s.rfind(' ') name = s[:idxLast] price = s[idxLast+1:] price = int(price) if name in od.keys(): od[name] += price else: od[name] = price for name, price in od.items(): print('{} {}'.format(name, price))