text: Function to count total no . of ways
code: static int countWays ( String str ) { int [ ] freq = new int [ 200 ] ; for ( int i = 0 ; i < 200 ; i ++ ) freq [ i ] = 0 ; for ( int i = 0 ; i < str . length ( ) ; i ++ ) freq [ str . charAt ( i ) - ' a ' ] ++ ;