Problem 45207. Calculate days until Christmas
Provided with inputs year, month, day e.g. 2019,11,12, calculate the number of days until the next Christmas day, i.e. the next time it will be December 25
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Number theory
- 44 Problems
- 21 Finishers
- Pseudo-vampire number
- Pell numbers
- Frugal number
- Be happy
- Bell Triangle
- find nth even fibonacci number
- Cantor counting
- check whether a number is a pentatope number
- generate nth pentatope number
- Fangs of a vampire number
- Find all vampire fangs
- Balanced number
- Mandelbrot Numbers
- Parasitic numbers
- Woodall number
- Kaprekar numbers
- Project Euler: Problem 4, Palindromic numbers
- Fangs of pseudo-vampire number
- Project Euler: Problem 9, Pythagorean numbers
- Mersenne Primes
- Sophie Germain prime
- Determine if input is a Narcissistic number
- Determine if input is a perfect number
- Ordinal numbers
- Lychrel Number Test (Inspired by Project Euler Problem 55)
- Circular Primes (based on Project Euler, problem 35)
- Largest Twin Primes
- Golomb's self-describing sequence (based on Euler 341)
- Is it an Armstrong number?
- Champernowne Constant
- Last non-zero digit
- Generate a Parasitic Number
- Smith numbers
- Evil Number
- Armstrong Number
- Polite numbers. Politeness.
- Polite numbers. N-th polite number.
- Narcissistic number ?
- Is this number Munchhausen?
- P-smooth numbers
- Iccanobif numbers 1
- Amicable numbers
- Extra safe primes
- Pentagonal Numbers
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