Try this: int i,k,n; long long j,nsq; for( n = 31623 ; n < 100000 ; ++n ) { nsq = (long long)n * (long long)n; j = nsq; k = 0; for( i = 0 ; i < 10; ++i ) { k |= (1 << (j % 10)); j /= 10; } if( k == 01777 ) printf("%i %lli\n",n,nsq); }
It finds 76 answers in the blink of an eye, the first being 32043^2 and the last being 99066^2. Dave On Feb 22, 3:17 pm, bittu <shashank7andr...@gmail.com> wrote: > How to find a number of 10 digits (non repeated digits) which is a > perfect square? perfect square examples: 9 (3x3) 16 (4x4) 25(5x) etc. > Ten digit number example 1,234,567,890 > > Thanks & Regards > Shashank -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.