Collections.OrderedDict() in Python - HackerRank Solution
Problem :
collections.OrderedDict
An OrderedDict is a dictionary that remembers the order of the keys that were
inserted first. If a new entry overwrites an existing entry, the original
insertion position is left unchanged.
Example
Code :
>>> from collections import OrderedDict >>> >>> ordinary_dictionary = {} >>> ordinary_dictionary['a'] = 1 >>> ordinary_dictionary['b'] = 2 >>> ordinary_dictionary['c'] = 3 >>> ordinary_dictionary['d'] = 4 >>> ordinary_dictionary['e'] = 5 >>> >>> print ordinary_dictionary {'a': 1, 'c': 3, 'b': 2, 'e': 5, 'd': 4} >>> >>> ordered_dictionary = OrderedDict() >>> ordered_dictionary['a'] = 1 >>> ordered_dictionary['b'] = 2 >>> ordered_dictionary['c'] = 3 >>> ordered_dictionary['d'] = 4 >>> ordered_dictionary['e'] = 5 >>> >>> print ordered_dictionary OrderedDict([('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)])
Task :
You are the manager of a supermarket.You have a list of N items together with their prices that consumers bought on a particular day.
Your task is to print each item_name and net_price in order of its first occurrence.
item_name = Name of the item.
net_price = Quantity of the item sold multiplied by the price of each item.
Input Format :
The first line contains the number of items, N.
The next N lines contains the item's name and price, separated by a space.
Constraints :
- 0 < N <= 100
Output Format :
Print the item_name and net_price in order of its first occurrence.
Sample Input :
9 BANANA FRIES 12 POTATO CHIPS 30 APPLE JUICE 10 CANDY 5 APPLE JUICE 10 CANDY 5 CANDY 5 CANDY 5 POTATO CHIPS 30
Sample Output :
BANANA FRIES 12 POTATO CHIPS 60 APPLE JUICE 20 CANDY 20
Explanation :
Net Price: 12
POTATO CHIPS: Quantity bought: 2, Price: 30
Net Price:
APPLE JUICE: Quantity bought: 2, Price: 10
Net Price: 20
CANDY: Quantity bought: 4, Price: 5
Net Price:20
Solution :
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # Collections.OrderedDict() in Python - Hacker Rank Solution # Python 3 # Enter your code here. Read input from STDIN. Print output to STDOUT # Collections.OrderedDict() in Python - Hacker Rank Solution START from collections import*; N = int(input()); d = OrderedDict(); for i in range(N): item = input().split() itemPrice = int(item[-1]) itemName = " ".join(item[:-1]) if(d.get(itemName)): d[itemName] += itemPrice else: d[itemName] = itemPrice for i in d.keys(): print(i, d[i]) # Collections.OrderedDict() in Python - Hacker Rank Solution END |
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