SoftUni Bar Income / Java
Привет,
Някой , ще удари ли едно рамо , да каже, защо във вторият пример за вход , четвъртата линия за е валидна.
Прилагам моето решение и условието.
1.*SoftUni Bar Income
Let`s take a break and visit the game bar at SoftUni. It is about time for the people behind the bar to go home and you are the person who has to draw the line and calculate the money from the products that were sold throughout the day. Until you receive a line with text "end of shift" you will be given lines of input. But before processing that line you have to do some validations first.
Each valid order should have a customer, product, count and a price:
- Valid customer's name should be surrounded by '%' and must start with a capital letter, followed by lower-case letters
- Valid product contains any word character and must be surrounded by '<' and '>'
- Valid count is an integer, surrounded by '|'
- Valid price is any real number followed by '$'
The parts of a valid order should appear in the order given: customer, product, count and a price.
Between each part there can be other symbols, except ('|', '$', '%' and '.')
For each valid line print on the console: "{customerName}: {product} - {totalPrice}"
When you receive "end of shift" print the total amount of money for the day rounded to 2 decimal places in the following format: "Total income: {income}".
Input / Constraints
- Strings that you have to process until you receive text "end of shift".
Output
- Print all of the valid lines in the format "{customerName}: {product} - {totalPrice}"
- After receiving "end of shift" print the total amount of money for the day rounded to 2 decimal places in the following format: "Total income: {income}"
- Allowed working time / memory: 100ms / 16MB.
Examples
|
Input |
Output |
Comment |
|
%George%<Croissant>|2|10.3$ %Peter%<Gum>|1|1.3$ %Maria%<Cola>|1|2.4$ end of shift |
George: Croissant - 20.60 Peter: Gum - 1.30 Maria: Cola - 2.40 Total income: 24.30 |
Each line is valid, so we print each order, calculating the total price of the product bought. At the end we print the total income for the day
|
|
%InvalidName%<Croissant>|2|10.3$ %Peter%<Gum>1.3$ %Maria%<Cola>|1|2.4 %Valid%<Valid>valid|10|valid20$ end of shift |
Valid: Valid - 200.00 Total income: 200.00 |
On the first line, the customer name isn`t valid, so we skip that line. The third line don`t have a valid price. And only the forth line is valid |
Здравей, Христо!
По повод regex-a, би ли ми обяснил защо на последното [^|$%.]* има и ? към него , а на другите не ?
И аз се мъ4а над този Regex.
^%(?<name>[A-Z][a-z]*)%[^|$%.]*<(?<product>\w+)>[^|$%.]*\|(?<count>[0-9]+)\|[^|$%.]*?(?<price>[0-9]+\.*[0-9]*)\$$
4етох за Greedy and Lazy quantifiers, но пак не си обясних съвсем защо има "?" на последния "*?".
Greedy - match longest possible string; Lazy - shortest possible. Би трябвало - последният да е Lazy, защото реално след него няма какво да се ма4ва ве4е. Ако някой може да сподели пове4е?