Array to store frequency of characters in given string
int [ ] count = new int [ 26 ] ; for ( int i = 0 ; i < N ; i ++ ) { count [ ( S . charAt ( i ) - 97 ) ] ++ ; } int E = N / K ; Vector < Integer > greaterE = new Vector < > ( ) ; Vector < Integer > lessE = new Vector < > ( ) ; for ( int i = 0 ; i < 26 ; i ++ ) {