**DAILY CHALLENGE**: Write a code that get as input a mathematical function as string. calculate and print the result of it!

Question

RESTRICTIONS:
1) function is allways polynom of 2nd degree
2) each coefficient is included even if they are 0
3) + AND - can occure
4) allways exactly 6 whitespaces in the string (function)

EXAMPLE 1:
- input = "f(3) = 2x^2 + 1x - 2"
- output = 19

EXAMPLE 2:
input = "f(2) = 4x^2 - 2x + 0"
output = 12

EXAMPLE 3:
input = "f(5) = 0x^2 - 0x - 3"
output = -3

PS: try to make your own parse function (if you're able to handle it)

GOOD LUCK EVERYONE ...
ENJOY CODING :)

Answer 1

Here's my python solution. I assumed first term couldn't be negative because it says always 6 white spaces. It returns floats because I wanted it to handle float without rounding.

https://code.sololearn.com/cFH4q6S8N84g/?ref=app

Answer 2

My try:
https://code.sololearn.com/WtWMxlNboy37/?ref=app

Answer 3

https://code.sololearn.com/cip3XLDRIMeg/?ref=app
Here's mine. It isn't pretty yet, but it should work.

Answer 4

ADDITIONAL EXPLANATION:

- 6 whitespaces means (whitespace marked as underscore):
f(3)_=_2x^2_+_1x_-_2

- input pattern is: ( - / + can change)
f(X) = Ax^2 + Bx - C

- not allowed input is:
f(2) = 4x^2 - 2x -> missing C
f(5) = - 3 -> missing Ax^2 and Bx
f(3) = 1x -> missing Ax^2 and C

Answer 5

Got it! This was a fun one! You can use any positive number and 0 as x and any positive numbers and 0 as constants. Used a regex to get the pattern of the function.
https://code.sololearn.com/cOc2G4zKd89P/?ref=app

Answer 6

Dear downvoters; with all due respect, if you found a bug in my code you could at least point it out. I'm sure that's a much more noble way to go about it don't you think?

Answer 7

So f(0) = 0x^0 + 0x + 0 works as an input?

Answer 8

@J G.
f(0) = 0x^0 + 0x + 0 isn't a function of 2nd degree!
it should be: f(0) = 0x^2 + 0x + 0 !!!

Answer 9

Lekker challenge mate 👍

https://code.sololearn.com/cjSe1lA1KEp0/?ref=app

Answer 10

In C#:

https://code.sololearn.com/ceV1KktD9yA6/?ref=app

Answer 11

https://code.sololearn.com/c5XAQCI0PZ7Q/?ref=app

Answer 12

HEY PEOPLE OUT THERE. I'M BACK FROM VACATION.
AND ANOTHER DAY MEANS ANOTHER CHALLENGE. CHECK IT OUT!!!

https://www.sololearn.com/discuss/622449/?ref=app

SOLUTION WILL BE UPLOADED TOMORROW NIGHT!

Answer 13

https://code.sololearn.com/czH5Lf2eSoYh/?ref=app

Answer 14

NEW CHALLENGE HERE:

https://www.sololearn.com/discuss/626739/?ref=app

Answer 15

NEW DAILY PRINT-CHALLENGE:
https://www.sololearn.com/discuss/628136/?ref=app

Answer 16

my new daily challenge:
https://www.sololearn.com/discuss/634515/?ref=app
CHECK IT OUT!!!

Answer 17

HEY CODERS OUT THERE...
NEW *DAILY CHALLENGE* RIGHT HERE:

https://www.sololearn.com/discuss/645450/?ref=app

Answer 18

MY NEW *DAILY CHALLENGE*:
GIVE IT A TRY!!!

https://www.sololearn.com/discuss/647083/?ref=app

Answer 19

NEW DAILY CHALLENGE FOR YOU:

https://www.sololearn.com/discuss/649970/?ref=app

Answer 20

ANOTHER MINI-CHALLENGE HERE:
https://www.sololearn.com/discuss/650079/?ref=app