Thraix/AdventOfCode
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Add solution for 2025 Day 2

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Thraix committed 2025-12-02 21:40:26 +01:00
1 parent c70100c1f1
commit ebd39eb65f
4 files changed
+134 -17
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src/common/lib/Helper.h
+65
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@@ -15,6 +15,18 @@
#define BIT(x) (1 << (x))
template <typename T>
static std::ostream& operator<<(std::ostream& stream, const std::vector<T>& container);
template <typename T>
static std::ostream& operator<<(std::ostream& stream, const std::set<T>& container);
template <typename T, typename S>
static std::ostream& operator<<(std::ostream& stream, const std::map<T, S>& container);
template <typename T, typename S>
static std::ostream& operator<<(std::ostream& stream, const std::pair<T, S>& pair);
struct Helper
{
template <typename T, typename S>
@@ -38,6 +50,59 @@ struct Helper
return c >= '0' && c <= '9';
}
static int GetNumberOfDigits(int n)
{
assert(n > 0);
// clang-format off
if (n < 10) return 1;
if (n < 100) return 2;
if (n < 1'000) return 3;
if (n < 10'000) return 4;
if (n < 100'000) return 5;
if (n < 1'000'000) return 6;
if (n < 10'000'000) return 7;
if (n < 100'000'000) return 8;
if (n < 1'000'000'000) return 9;
// clang-format on
return 10;
}
static int GetNumberOfDigits(int64_t n)
{
assert(n > 0);
// clang-format off
if (n < 10) return 1;
if (n < 100) return 2;
if (n < 1'000) return 3;
if (n < 10'000) return 4;
if (n < 100'000) return 5;
if (n < 1'000'000) return 6;
if (n < 10'000'000) return 7;
if (n < 100'000'000) return 8;
if (n < 1'000'000'000) return 9;
if (n < 10'000'000'000) return 10;
if (n < 100'000'000'000) return 11;
if (n < 1'000'000'000'000) return 12;
if (n < 10'000'000'000'000) return 13;
if (n < 100'000'000'000'000) return 14;
if (n < 1'000'000'000'000'000) return 15;
if (n < 10'000'000'000'000'000) return 16;
if (n < 100'000'000'000'000'000) return 17;
if (n < 1'000'000'000'000'000'000) return 18;
// clang-format on
return 19;
}
static int64_t Pow10(int pow)
{
int64_t p = 10;
for (int i = 1; i < pow; i++)
{
p *= 10;
}
return p;
}
// Converts a binary string to an int32_t ie "10100111001" to 1337
static int BinStrToInt(const std::string& str)
{