Printing index of the cyclic right shift
for ( int l = 0 ; l < ( N / 4 ) ; l ++ ) { Console . WriteLine ( k + " ▁ " + ( k + 1 ) + " ▁ " + N ) ; Console . WriteLine ( k + 1 + " ▁ " + N + " ▁ " + ( N - 1 ) ) ; k = k + 2 ; N = N - 2 ; } } else Console . ( " NO " ) ; }