Evaluating decimal for current substring and printing it .
int sum = 0 , counter = 0 ; for ( int j = sub . length ( ) - 1 ; j >= 0 ; j -- ) { sum = ( int ) ( sum + ( ( sub . charAt ( j ) - '0' ) * Math . pow ( b , counter ) ) ) ; counter ++ ; } System . out . print ( sum + " ▁ " ) ; } }