Added a funny option to generate primes.

...But primes in base 36 and it skips all numbers with digits in the
range 0-9

2 files changed, 52 insertions, 0 deletions

diff --git a/src/options.cpp b/src/options.cpp
index 4fcf1e2..7f66028 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -1,13 +1,17 @@
 #include "options.h"

 

 #include "unitnumber.h"

+#include "number.h"

 

+#include <bu/sio.h>

 #include <stdlib.h>

 

 Options::Options( int argc, char *argv[] )

 {

     addOption( Bu::slot(this, &Options::selfTest), "self-test",

         "Run a series of tests to ensure everything is working correctly.");

+    addOption( Bu::slot(this, &Options::textPrimes), "text-primes",

+        "Generate primes in base 36 that only have digits > 9 in them.");

     addHelpOption('h', "help", "This help");

 

     parse( argc, argv );

@@ -22,5 +26,52 @@ int Options::selfTest( Bu::StringArray )
     UnitNumber().run();

 

     exit( 0 );

+    return 0;

+}

+

+bool hasDigits( const Bu::String &s )

+{

+    for( Bu::String::const_iterator i = s.begin(); i; i++ )

+    {

+        if( *i >= '0' && *i <= '9' )

+            return true;

+    }

+    return false;

+}

+

+int Options::textPrimes( Bu::StringArray )

+{

+    Number tst( 0, 36 );

+    Number max( 0, 36 );

+    Number j( 0, 36 );

+    Number one( 0, 36 );

+    Number fact( 0, 36 );

+    one = "1";

+    fact = "2";

+

+    for( tst = "1";; tst = tst + one )

+    {

+        if( hasDigits( tst.toString() ) )

+            continue;

+

+        max = tst / fact;

+        bool bPrime = true;

+        for( j = "2"; j < max; j = j + one )

+        {

+            if( (tst%j).isZero() )

+            {

+                bPrime = false;

+                break;

+            }

+        }

+

+        if( bPrime )

+        {

+            Bu::println("%1").arg( tst );

+        }

+    }

+    

+    exit( 0 );

+    return 0;

 }

 

diff --git a/src/options.h b/src/options.h
index 667e486..11bf896 100644
--- a/src/options.h
+++ b/src/options.h
@@ -11,6 +11,7 @@ public:
 

 private:

     int selfTest( Bu::StringArray aArgs );

+    int textPrimes( Bu::StringArray aArgs );

 };

 

 #endif