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ページの作成:「==エラトステネスのふるい== [VC++.NET]{{category ロジック}} using namespace System; static void screenNumber(array<bool>^ args) { args[0]…」
==エラトステネスのふるい==
[VC++.NET]{{category ロジック}}
using namespace System;
static void screenNumber(array<bool>^ args) {
args[0] = true;
args[1] = true;
for (int i=2; i < args->Length; i++) {
for (int j=2; j < args->Length; j++) {
int num = i * j;
if (num >= args->Length) {
break;
}
args[num] = true;
}
}
}
static void print(array<bool>^ ary) {
int itemCnt = 0;
for (int i=0; i < ary->Length; i++) {
if (!ary[i]) {
Console::Write("{0,6:d} {1}", i, ((++itemCnt % 6 == 0)?"\n":""));
}
}
}
int main(array<System::String ^> ^args)
{
int size = 0l;
array<bool>^ ary = nullptr;
try {
size = Int32::Parse(args[0]);
ary = gcnew array<bool>(size);
} catch (Exception^ e) {
Console::WriteLine("引数が不正です\n{0}", e);
return -1;
}
screenNumber(ary);
print(ary);
return 0;
}
[VC++.NET]{{category ロジック}}
using namespace System;
static void screenNumber(array<bool>^ args) {
args[0] = true;
args[1] = true;
for (int i=2; i < args->Length; i++) {
for (int j=2; j < args->Length; j++) {
int num = i * j;
if (num >= args->Length) {
break;
}
args[num] = true;
}
}
}
static void print(array<bool>^ ary) {
int itemCnt = 0;
for (int i=0; i < ary->Length; i++) {
if (!ary[i]) {
Console::Write("{0,6:d} {1}", i, ((++itemCnt % 6 == 0)?"\n":""));
}
}
}
int main(array<System::String ^> ^args)
{
int size = 0l;
array<bool>^ ary = nullptr;
try {
size = Int32::Parse(args[0]);
ary = gcnew array<bool>(size);
} catch (Exception^ e) {
Console::WriteLine("引数が不正です\n{0}", e);
return -1;
}
screenNumber(ary);
print(ary);
return 0;
}
© 2006 矢木浩人
