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author | Nathan Lasseter <nathan.je.lasseter@googlemail.com> | 2009-10-04 00:56:56 +0100 |
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committer | Nathan Lasseter <nathan.je.lasseter@googlemail.com> | 2009-10-04 00:56:56 +0100 |
commit | 0248ed34ce3d05228bc5084669c3a27933be0c2e (patch) | |
tree | b9c4990344b0863a2af851b5917c49f3a5f03e6b /problem36.erl | |
parent | 00686037d57eb0a0d5eba6eeb6fcc9692e8b59f6 (diff) |
first commit
Diffstat (limited to 'problem36.erl')
-rwxr-xr-x | problem36.erl | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/problem36.erl b/problem36.erl new file mode 100755 index 0000000..06a12e5 --- /dev/null +++ b/problem36.erl @@ -0,0 +1,16 @@ +-module(problem36). +-export([solve/0]). + +lists() -> [ integer_to_list(X) || X <- lists:seq(1,1000000) ]. + +palindromes() -> [ list_to_integer(X) || X <- lists(), X =:= lists:reverse(X) ]. + +binaries() -> [ hd(io_lib:format("~.2B", [X])) || X <- palindromes() ]. + +bin_pal() -> [ X || X <- binaries(), X =:= lists:reverse(X) ]. + +make_3ples() -> [ io_lib:fread("~2u", X) || X <- bin_pal() ]. + +make_decs() -> [ Val || {ok, [Val], _} <- make_3ples() ]. + +solve() -> lists:sum(make_decs()). |