Solution Manual for Data Structures and Problem Solving Using Java, 4th Edition

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Page 1 of 1Weiss 4thEdition Solutions to Exercises(US Version)Chapter 1 – Primitive Java1.1 Key Concepts and How To Teach ThemThis chapter introduces primitive features of Java found in all languages such as Pascal and C:•basic lexical elements•primitive types•basic operators•control flow•functions (known as methods in Java)Students who have had Java already can skip this chapter. I teach the material in the order presented. There islittle tricky material here (this is part of the appeal of Java). Although the text does not mention C or C++, hereare some differences:1.Primitive types have precise ranges. There is no unsigned type. A char is 16 bits.2.Order of evaluation is guaranteed (generally left to right). In particular, the sequence point rule fromC++ is not needed. Thus nonsense such as x++ + x++ has a precise behavior in Java.3.Only the C‐style type conversion is allowed.4.boolean is a primitive type, thus removing many of the common errors in C++, such as if(x=y) ... .5.There is no comma operator, except in for loop expressions.6.Java provides a labeled break statement.7.7. All functions must be class methods.1.2 Solutions to ExercisesIN SHORT1.1Java source files end in.java. Compiled files (containing j‐code or byte‐codes) end in.class.1.2//, which extends to the end of the line and/*and/**, both of which extend to a*/. Comments donot nest.1.3boolean,byte,short,char,int,long,float, anddouble.1.4* multiplies two primitive values, returning the result and not changing its two arguments. *=changes the left‐hand argument to the product of the left‐hand argument and the right‐handargument. The right‐hand argument is unchanged.1.5Both the prefix and postfix increment operators add one to the target variable. The prefix operatoruses the new value of the variable in a larger expression; the postfix operator uses the prior value.1.6Thewhileloop is the most general loop and performs a test at the top of the loop. The body isexecuted zero or more times. Thedoloop is similar, but the test is performed at the bottom of theloop; thus the body is executed at least once. Theforloop is used primarily for counting‐likeiteration and consists of an initialization, test, and update along with the body.1.7breakis used to exit a loop. A labeledbreakexits the loop that is marked with a label.breakisalso used to exit aswitchstatement, rather than stepping through to the next case.1.8Thecontinuestatement is used to advance to the next iteration of the loop.1.9Method overloading allows the reuse of a method name in the same scope as long as the signatures(parameter list types) of the methods differ.

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