Temperatures puzzle discussion

Puzzles
#1049

Ok ! got it thx :slight_smile:

#1050

Instructions say:
Display 0 (zero) if no temperatures are provided. Otherwise, display the temperature closest to 0.

However, the test case for no temperatures is expecting no output, contrary to the instructions.

#1051

That case does expect an output of 0. Could you please copy and paste whatā€™s shown in the console after you run that case?

#1052

Constraint is that the temperature set should contain between 0 and 10K temps => No test case is checking that and/or expecting value/error if set is too big (I truncated it)
Also noted that temps should be in a range between -276 and 5526 => No test case to check that and/or expecting value/error if a temp is out of range (I ignored those values)
Could be good to teach new developers to never trust user inputs :wink:

Tested in C.

#1053

Where do you see a case where the inputs violate the constraints/rules?

#1055

i placed the temps into a list and used an if statement to check if the length of the list is 0 and if this came back as true i set my answer to 0

#1056

after submitting your response they run your code through more test cases to make sure you didnā€™t hard code the solution

#1057

Hello ! :slight_smile:
Iā€™ve got a bug with this puzzleā€¦
Unit test 2 and 3 :
Testing with one value = max range.
Testing with one value = min range.
Are not displayed in the run test part during coding, but there are displayed after submissionā€¦
So, I canā€™t reach 100% validationā€¦ :cry:
Any answer ? :slight_smile:

#1058

I donā€™t quite understand your question, but yes, you do have to write a solution general enough to pass the hidden validators. This applies to all puzzles here, where most of the visible cases are different from the validators.

#1059

SECOND EDIT
@5DN1L sent me a link to an article that answered my confusion, so thanks! Itā€™s because of the split function. The array of numbers is being created at the top with

var inputs = readline().split(' ');

Here is the article they sent me to explain the split function, for anyone else as confused as I was.
Split Function Explained

END SECOND EDIT

EDIT

I still donā€™t understand why my original code didnā€™t work, but I updated it so that the following code is at the bottom, and it passed all test cases this way.

if (!arr[0]) {
return 0;
}

!arr[0] is the same thing as arr.length === 0 is it not!? So irritating, lol.

END EDIT

I do not understand why my code did not pass the final test case (an empty array). The first thing my code checks for is an empty array, and returns 0 if itā€™s the case. That is what the last test case is looking for, but it kept telling me ā€œSaw ā€˜nothingā€™ expected ā€˜0ā€™ā€.

The first block of code in my tempClosestToZero function is:

if (arr.length === 0) {
  return 0;
}

I passed all of the other test cases, but failed the last one, and it is driving me crazy. Am I just overlooking some stupid detail, or is this a bug?

I code with JS by the way.

#1060

Did you just return 0 without console.log(0)?

#1061

No, I made a function that returns either 0 or the closest to zero, and then console logged a call to that function. The function was returning the answer for all of the other cases and those were passing, so returning 0 shouldnā€™t have failed.

#1062

If you want, you can send me your code in private message and Iā€™ll take a look.

Edit: The issue has been found: JavaScript splitting an empty string does not result in an empty array of length 0.

#1063

Hi! I am very young on the learning of Python 3 and i am struggling with this code.
How do you compare the value of a list? How can you find the minimal and maximum number of temperature? With which fonction. My code looks like this for now

tempnulle = 0
tempP = t

n = int(input()) # the number of temperatures to analyse
for i in input().split():
# t: a temperature expressed as an integer ranging from -273 to 5526
t = int(i)
if tempP > tempnulle :
result = tempP
tempP = max(t)
if tempP < tempnulle :
result = tempP
tempP = min(t)
if tempP == tempnulle :
result = 0

Thanks per advance,
KĆ©vin

#1064

It helps by forgetting code for a moment, and assume you receive the temperatures on some pieces of paper instead. In that case, how would you find out the answer, manually? After you find a working approach, you can then convert that into code.

#1065

Thx for you answer 5D.

I have modified the code but the answer i got is always the last number.
Where can be the issue?

Code :

tempnulle = 0

n = int(input())  # the number of temperatures to analyse
for i in input().split():
    # t: a temperature expressed as an integer ranging from -273 to 5526
    t = int(i)
    tempPOS = t
    tempNEG = t 
    temp_finale = t

    if t > tempnulle :
        tempPOS = t
        if t < tempPOS :
            tempPOS = t
    # find positive value close to 0

    if t < tempnulle :
        tempNEG = t
        if t > tempNEG :
            tempNEG = t
    # find negative value close to 0

    if t == tempnulle :
        tempnulle = 0
    # If no temperature

ecartPOS = abs(tempPOS - tempnulle)
ecartNEG = abs(tempNEG - tempnulle)

if ecartPOS > ecartNEG :
        temp_finale = ecartPOS
if ecartPOS < ecartNEG :
        temp_finale = ecartNEG
# find and pick the closest number to 0

print(temp_finale)

Thx for your help

#1066

I tried to reformat your code as you pasted your code without indentation. Please edit it if itā€™s still wrong (in particular the last part). Please remember to use the </> button on the formatting toolbar to format your code properly.

I cannot comment on your code until I see the properly indented code.

Also, can you describe in words (not in code) what your current approach is?