From 37ecdb9e5fe3f45fd9ae199c073f0ac7e383079a Mon Sep 17 00:00:00 2001 From: Ishan Pranav Date: Tue, 13 Feb 2024 18:34:21 -0500 Subject: [PATCH] Add Roman library --- Makefile | 5 +- README.md | 1 + data/id0089.txt | 1000 +++++++++++++++++++++++++++++++++++++++++++++++ lib/roman.c | 88 +++++ lib/roman.h | 25 ++ src/id0087.c | 2 +- src/id0089.c | 21 + tools/test.ps1 | 2 +- tools/test.sh | 2 +- 9 files changed, 1142 insertions(+), 4 deletions(-) create mode 100644 data/id0089.txt create mode 100644 lib/roman.c create mode 100644 lib/roman.h create mode 100644 src/id0089.c diff --git a/Makefile b/Makefile index 113c773..cfbf825 100644 --- a/Makefile +++ b/Makefile @@ -32,7 +32,7 @@ all: \ id0068$(E) id0069$(E) id0070$(E) id0071$(E) id0072$(E) id0073$(E) \ id0074$(E) id0075$(E) id0076$(E) id0077$(E) id0078$(E) id0079$(E) \ id0080$(E) id0081$(E) id0082$(E) id0083$(E) id0084$(E) id0085$(E) \ - id0086$(E) id0087$(E) id0088$(E) + id0086$(E) id0087$(E) id0089$(E) libeuler$(A): $(call RECURSE,lib,*.c) $(RM) *.o @@ -303,5 +303,8 @@ id0086$(E): src/id0086.c libeuler$(A) id0087$(E): src/id0087.c libeuler$(A) $(CC) $(CFLAGS) $< -o $@ $(LEULER) $(LM) +id0089$(E): src/id0089.c libeuler$(A) + $(CC) $(CFLAGS) $< -o $@ $(LEULER) $(LM) + clean: $(RM) *$(A) *.o diff --git a/README.md b/README.md index 2aa334f..2743678 100644 --- a/README.md +++ b/README.md @@ -121,6 +121,7 @@ which is licensed under the GNU Lesser General Public License v3.0 (`LGPL-3.0`). | 85 | [Counting Rectangles](src/id0085.c) | Geometry | Area | | | 86 | [Cuboid Route](src/id0086.c) | Geometry | Minimum | | | 87 | [Prime Power Triples](src/id0087.c) | Number theory | Count | [Hash set](https://en.wikipedia.org/wiki/Hash_table) | +| 89 | [Roman Numerals](src/id0089.c) | Numeral systems | Difference | [Roman numerals](https://en.wikipedia.org/wiki/Roman_numerals) | ## LeetCode diff --git a/data/id0089.txt b/data/id0089.txt new file mode 100644 index 0000000..50651c3 --- /dev/null +++ b/data/id0089.txt @@ 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+DLXXXVI +MMMMDXXXII +MMMXXIIII +MMMMCDIV +MMMMCCCXLVIII +MMMMCXXXVIII +MMMCCCLXVI +MDCCXVIII +MMCXX +CCCLIX +MMMMDCCLXXII +MDCCCLXXV +MMMMDCCCXXIV +DCCCXXXXVIII +MMMDCCCCXXXVIIII +MMMMCCXXXV +MDCLXXXIII +MMCCLXXXIV +MCLXXXXIIII +DXXXXIII +MCCCXXXXVIII +MMCLXXIX +MMMMCCLXIV +MXXII +MMMCXIX +MDCXXXVII +MMDCCVI +MCLXXXXVIII +MMMCXVI +MCCCLX +MMMCDX +CCLXVIIII +MMMCCLX +MCXXVIII +LXXXII +MCCCCLXXXI +MMMI +MMMCCCLXIV +MMMCCCXXVIIII +CXXXVIII +MMCCCXX +MMMCCXXVIIII +MCCLXVI +MMMCCCCXXXXVI +MMDCCXCIX +MCMLXXI +MMCCLXVIII +CDLXXXXIII +MMMMDCCXXII +MMMMDCCLXXXVII +MMMDCCLIV +MMCCLXIII +MDXXXVII +DCCXXXIIII +MCII +MMMDCCCLXXI +MMMLXXIII +MDCCCLIII +MMXXXVIII +MDCCXVIIII +MDCCCCXXXVII +MMCCCXVI +MCMXXII +MMMCCCLVIII +MMMMDCCCXX +MCXXIII +MMMDLXI +MMMMDXXII +MDCCCX +MMDXCVIIII +MMMDCCCCVIII +MMMMDCCCCXXXXVI +MMDCCCXXXV +MMCXCIV +MCMLXXXXIII +MMMCCCLXXVI +MMMMDCLXXXV +CMLXIX +DCXCII +MMXXVIII +MMMMCCCXXX +XXXXVIIII \ No newline at end of file diff --git a/lib/roman.c b/lib/roman.c new file mode 100644 index 0000000..054c1e7 --- /dev/null +++ b/lib/roman.c @@ -0,0 +1,88 @@ +// Licensed under the MIT License. + +#include +#include "roman.h" +#define KEYS 13 + +static String romans[KEYS] = +{ + "M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I" +}; + +static int values[KEYS] = +{ + 1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1 +}; + +int roman_from_char(char value) +{ + switch (value) + { + case 'M': return 1000; + case 'D': return 500; + case 'C': return 100; + case 'L': return 50; + case 'X': return 10; + case 'V': return 5; + case 'I': return 1; + default: return 0; + } +} + +int roman_from_string_builder(StringBuilder value) +{ + if (value->length == 0) + { + return 0; + } + + int result = 0; + int previous = 0; + int subtractive = false; + + for (size_t i = value->length - 1; i != SIZE_MAX; i--) + { + int current = roman_from_char(value->buffer[i]); + + subtractive = current < previous; + previous = current; + + if (subtractive) + { + result -= current; + } + else + { + result += current; + } + } + + return result; +} + +Exception roman_to_string_builder(StringBuilder result, int value) +{ + Exception ex = string_builder(result, 32); + + if (ex) + { + return ex; + } + + for (int i = 0; i < KEYS; i++) + { + while (value / values[i]) + { + ex = string_builder_append_string(result, romans[i]); + + if (ex) + { + return ex; + } + + value -= values[i]; + } + } + + return 0; +} diff --git a/lib/roman.h b/lib/roman.h new file mode 100644 index 0000000..8328e62 --- /dev/null +++ b/lib/roman.h @@ -0,0 +1,25 @@ +// Licensed under the MIT License. + +#include "string_builder.h" + +/** + * + * @param value + * @return +*/ +int roman_from_char(char value); + +/** + * + * @param value + * @return +*/ +int roman_from_string_builder(StringBuilder value); + +/** + * + * @param result + * @param value + * @return +*/ +Exception roman_to_string_builder(StringBuilder result, int value); diff --git a/src/id0087.c b/src/id0087.c index f5567bb..36739f5 100644 --- a/src/id0087.c +++ b/src/id0087.c @@ -50,5 +50,5 @@ int main(void) finalize_hash_set(&sums); finalize_sieve(&primes); - return euler_submit(86, count, start); + return euler_submit(87, count, start); } diff --git a/src/id0089.c b/src/id0089.c new file mode 100644 index 0000000..9c198bf --- /dev/null +++ b/src/id0089.c @@ -0,0 +1,21 @@ +// Licensed under the MIT License. + +// Roman Numerals + +#include "../lib/euler.h" +#include "../lib/roman.h" + +int main(void) +{ + long sum = 0; + clock_t start = clock(); + struct StringBuilder result; + + roman_to_string_builder(&result, 16); + printf("%s\n", result.buffer); + finalize_string_builder(&result); + string_builder_from_string(&result, "XVI"); + printf("%d\n", roman_from_string_builder(&result)); + + return euler_submit(89, sum, start); +} diff --git a/tools/test.ps1 b/tools/test.ps1 index 7dc38e8..35f8677 100644 --- a/tools/test.ps1 +++ b/tools/test.ps1 @@ -65,7 +65,7 @@ Get-Content '../data/id0081.txt' | ./../id0081.exe Get-Content '../data/id0081.txt' | ./../id0082.exe Get-Content '../data/id0081.txt' | ./../id0083.exe -for ($i = 84; $i -le 90; $i++) +for ($i = 84; $i -le 88; $i++) { Invoke-Expression "./../id00${i}.exe" } diff --git a/tools/test.sh b/tools/test.sh index e553e62..2934b1e 100644 --- a/tools/test.sh +++ b/tools/test.sh @@ -72,7 +72,7 @@ cat ../data/id0081.txt | $run ./../id0081 cat ../data/id0081.txt | $run ./../id0082 cat ../data/id0081.txt | $run ./../id0083 -for i in {0084..0090}; +for i in {0084..0088}; do $run ./../id${i} done