Hello coders, today we are going to solve Collections.OrderedDict() in Python Hacker Rank Solution.
- Objective
- Task
- Input Format
- Constraints
- Output Format
- Solution - Collections.OrderedDict() in Python
Objective
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
BANANA FRIES: Quantity bought: 1, Price: 12
Net Price: 12
POTATO CHIPS: Quantity bought: 2, Price: 30
Net Price: 60
APPLE JUICE: Quantity bought: 2, Price: 10
Net Price: 20
CANDY: Quantity bought: 4, Price: 5
Net Price: 20
Solution - Collections.OrderedDict() in Python - Hacker Rank Solution
Python 3
# Enter your code here. Read input from STDIN. Print output to STDOUT
from collections import OrderedDict
order = OrderedDict()
for _ in range(int(input())):
item, space, price = input().rpartition(' ')
order[item] = order.get(item, 0) + int(price)
for item, price in order.items():
print(item, price)
Disclaimer: The above Problem (Collections.OrderedDict()) is generated by Hacker Rank but the Solution is provided by Sloth Coders. This tutorial is only for Educational and Learning Purpose.
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