Problem 2025. Find the day for a date

Created by Vivek

Solve Later

Today's day and date will be given to you. By utilising that you need to find the day of the old date. (Date will be in DD/MM/YYYY format, Consider leap years also).

Example:

TodayDate='20/11/2013'

Today='Monday'

UnknownDay_Date ='19/11/2013'

So here you need to provide output as UnknownDay='Sunday'

Solve the problem in the hypothetical world where 16 April 2019 happens on Saturday instead of Tuesday.

Note: It is not like using "datestr" and finding result. You need to calculate the number of inbetween days and then find the answer.

Solve

Solution Stats

44 Solutions
17 Solvers

Last Solution submitted on Mar 31, 2020

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

J.R.! Menzinger on 2 Dec 2013

I think the 22/10/1901 was a Tuesday... :-/
http://www.infoplease.com/calendar.php?month=10&year=1901&submit=Go

Vivek on 3 Dec 2013

Its not like using datestr and solving this. You need to calculate the days and divide it by 7, take the reminder and increment that many days to present day.

Gergely Patay on 5 Jun 2015

Problem statement would be much better with an additional sentence:
"Solve the problem in the hypothetical world where 16 April 2019 happens on Saturday instead of Tuesday."
Otherwise this is just lame.

Solution Comments

Solution 1534905

3 Comments

3 Comments

J. S. Kowontan on 20 May 2018

Really, Bainhome...the problem is not 'some function you did not grasp' but the logic applied in solving this particular mathematical problem. :)

J. S. Kowontan on 20 May 2018

I'll suggest you take a relativistic approach as opposed to @Vivek comment. Goodluck.

bainhome on 20 May 2018

To be honest, this one took me a while...and when it finished, my first thought is: code like that should considered as a crime...let me think this through.Thx man!

Solution 1534479

1 Comment

1 Comment

bainhome on 20 May 2018

have to admit, this code and the one alfonso wrote are really elegant. I will look into it tomorrow.

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cody community find day