Java Program to find ith character in a binary String .
import java . io . * ; import java . util . Arrays ; class GFG { static String s = " " ; static String ReverseString ( String s ) { char [ ] arr = s . toCharArray ( ) ; for ( int i = 0 ; i < arr . length / 2 ; i ++ ) { char temp = arr [ i ] ; arr [ i ] = arr [ arr . length - i - 1 ] ; arr [ arr . length - i - 1 ] = temp ; } return new String ( arr ) ; }