text: Traverse through string characters and count frequencies
code: for ( int i = 0 ; i < str . length ( ) ; i ++ ) count [ str . charAt ( i ) ] ++ ; for ( int i = 0 ; i <= limit ; i ++ ) if ( count [ i ] > 0 ) System . out . println ( ( char ) i + " ▁ " + count [ i ] ) ; }