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| author | Iru Cai <mytbk920423@gmail.com> | 2018-05-24 21:39:58 +0800 |
|---|---|---|
| committer | Iru Cai <mytbk920423@gmail.com> | 2018-05-24 21:39:58 +0800 |
| commit | 1eefd58ca4fdb5d2f51f657bfd70c9a89a4707db (patch) | |
| tree | abde0e4da3c7fe138f3874a94d8eb7d0e44c3224 /euler20.scm | |
| download | project_euler-1eefd58ca4fdb5d2f51f657bfd70c9a89a4707db.tar.xz | |
initial commit
Diffstat (limited to 'euler20.scm')
| -rw-r--r-- | euler20.scm | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/euler20.scm b/euler20.scm new file mode 100644 index 0000000..df06c9d --- /dev/null +++ b/euler20.scm @@ -0,0 +1,16 @@ +(define (sum-digits n) + (if (= n 0) + 0 + (+ (remainder n 10) + (sum-digits (floor (/ n 10)))))) + +(define (! n) + (define (p-iter i p) + (if (> i n) + p + (p-iter (+ i 1) (* p i)))) + (p-iter 1 1)) + +(display (sum-digits (! 100))) +(newline) + |