Charles Reid
101fe9a3d3
Adding working version of test for 8 divisors, problem 501.
7 years ago
Charles Reid
39cc30bc93
Adding working test version for optimal polynomial solution.
7 years ago
Charles Reid
4f48237b6b
Lychrel number, yet another one to practice palindromes.
7 years ago
Charles Reid
193cbd2416
add make clean command.
7 years ago
Charles Reid
15d67b3ca8
Adding Euler Solution interface, Euler Test class, and first problem using this format.
7 years ago
Charles Reid
c29d3b2635
adding java directory, with proper unit tests.
7 years ago
Charles Reid
abc8304f23
Update Poker solution - straight check was broken. Everythign now working.
7 years ago
Charles Reid
72f3432b47
Committing finished versions of all methods, plus some major bug fixes. All five tests passing now.
7 years ago
Charles Reid
dc6bdbc87b
Adding powerful digit sum. Sometimes it is a matter of knowing when to use the brute force solution.
7 years ago
Charles Reid
ce9f95df69
Making progress. Have laid out tests, poker hand class, comparators, and poker cards. Finished implementing several outcomes, have a few left to go.
7 years ago
Charles Reid
c756600292
adding initial version that parses poker hands.
7 years ago
Charles Reid
681f4186c7
cleanup for problem 100.
7 years ago
Charles Reid
7ec81b86a4
adding 20.
7 years ago
Charles Reid
4a6ff8e5f4
adding makefile
7 years ago
Charles Reid
e2d5860f5e
Finally got this one. Have to update n and b, simultaneously, after computing their new values.
7 years ago
Charles Reid
9c9064864d
unsuccessful in finding solution to PE 100 with integer square root idea...
7 years ago
Charles Reid
c7c36031f9
fixing up problem 501 statement
7 years ago
Charles Reid
98f5cccf3a
Adding 053, combinatoric values greater than 1 million.
7 years ago
Charles Reid
00448f77ad
not using this.
7 years ago
Charles Reid
c99c655cd0
Adding permuted multiples problem - program design was central.
7 years ago
Charles Reid
6ec861c133
adding sums of digits of powers of 2 checker.
7 years ago
Charles Reid
aba2868380
Adding number letter counts script. Interval thinking, and method chaining.
7 years ago
Charles Reid
b2414b216f
Add 016, sum of digits of 2**1000. Very quick with BigInteger.
7 years ago
Charles Reid
0205bb16e9
updating readme.
7 years ago
Charles Reid
dce13543dc
Committing actual problem solution.
...
This expands the 1-digit example *3 into a routine that
replaces 2 and 3 digits. Knowing that we had to go past 2
took a while.
7 years ago
Charles Reid
fb464af82d
todo item for problem 500.
7 years ago
Charles Reid
7a95cb5970
add javadocs, make the size M of our candidate number a parameter.
7 years ago
Charles Reid
e07859aa08
Adding problem 51 - worked out example.
7 years ago
Charles Reid
de2a0b34fc
adding makefile for problem 12
7 years ago
Charles Reid
12fd3b6144
add problem file to problem 11.
7 years ago
Charles Reid
79996da29c
adding (untracked??) problem 10 solution.
7 years ago
Charles Reid
6f72dac3af
renaming problem 001 file.
7 years ago
Charles Reid
2b92edec31
adding a working, but mod-less, answer to problem 500.
...
Note that this will completely blow up with large inputs.
However, it is working for small inputs, i.e., we can find
numbers with 2^4, 2^5, 2^6, etc. factors correctly
(checked with Wolfram Alpha).
7 years ago
Charles Reid
44d6363218
update collatz recursive version and makefile.
7 years ago
Charles Reid
21bf8ab918
Adding a version of Collatz sequence program that does not use recursion.
7 years ago
Charles Reid
50dfb93684
Updating problem.txt files for each problem.
7 years ago
Charles Reid
24df376856
Adding supplementary problem files for Problem 13, Digit Sum.
7 years ago
Charles Reid
f5dd691b95
removing unneeded javadocs comment.
7 years ago
Charles Reid
7d0edf8ef8
Adding Digit Sum problem.
7 years ago
Charles Reid
819240a40a
adding note on possible fix.
7 years ago
Charles Reid
e489a107ae
have a viable solution, but it is recursive and throws a stack overflow error 10% through the problem.
7 years ago
Charles Reid
6b16e9a914
Committing triangular number program.
7 years ago
Charles Reid
478c828ac2
add problem 11 solution.
7 years ago
Charles Reid
1536374334
Adding problem 9 for project euler.
7 years ago
Charles Reid
479846e123
adding problem 4 solution. That was easy.
7 years ago
Charles Reid
a7d1cd78d4
moving each problem to own directory.
7 years ago
Charles Reid
1d96e0fdc7
adding 008 directory with updated/working problem 8.
7 years ago
Charles Reid
630c51b975
add updates to makefile.
7 years ago
Charles Reid
89f6913e3a
adding problem 8 - kicker was recognizing that 13 digits is just above 32 bytes. we are trying to find a number greater than 2**32.
7 years ago
Charles Reid
3678ad857d
try again later...
7 years ago
