text: k | C # program to find k - th element in the Odd - Even sequence . ; insert all the odd numbers from 1 to n . ; insert all the even numbers from 1 to n . ; Driver code
code: using System ; using System . Collections ; class GFG { static int findK ( int n , int k ) { ArrayList a = new ArrayList ( n ) ; for ( int i = 1 ; i < n ; i ++ ) if ( i % 2 == 1 ) a . Add ( i ) ; for ( int i = 1 ; i < n ; i ++ ) if ( i % 2 == 0 ) a . Add ( i ) ; return ( int ) ( a [ k - 1 ] ) ; } static void Main ( ) { int n = 10 , k = 3 ; Console . WriteLine ( findK ( n , k ) ) ; } }