C # program to count PanDigital pairs
using System ; using System . Collections . Generic ; class GFG { static int pandigitalMask = ( ( 1 << 10 ) - 1 ) ; static void computeMaskFrequencies ( List < String > v , Dictionary < int , int > freq ) { for ( int i = 0 ; i < v . Count ; i ++ ) { int mask = 0 ;