By Mark J. Johnson
Designed for a CS2 info buildings path, this article presents an intensive yet concise evaluation of knowledge constructions in addition to a steady creation to Java. It makes use of a concise variety and comprises pseudocode and workouts all through in order that scholars the best way to write code, instead of simply learn it. The booklet covers all the major parts taught in CS2 classes, together with arrays, lists, stacks, queues, recursion, maps, and trees. Read more...
Designed for a CS2 information buildings path, this article presents an intensive yet concise evaluate of knowledge constructions in addition to a steady advent to Java. It makes use of a concise variety and comprises pseudocode and workouts all through in order that scholars methods to write code, instead of simply learn it. The e-book covers all the major components taught in CS2 classes, together with arrays, lists, stacks, queues, recursion, maps, and timber
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Additional resources for A Concise Introduction to Data Structures Using Java
Each of those is somewhat unique; this section uses a more representative example to convey the general ideas. Objects are defined by classes. In this section, we focus on how to use objects; in the next section, we look at how to write our own classes. 4 ties together some ideas from the last two sections. Before looking at the details of how the StringBuilder class and the split() method are used in it, we consider some general issues involved in using Java objects. toString(); } The type that a reference is declared with defines the methods and fields that may be used via the reference.
Explain why it works to use == in line 4 of the linearSearch() method. Would substituting equals() also work? 8. 3 that searches for every element in the array data. 9. Write a sum(int data) method for the ArrayFunctions class that returns the sum of the elements in the given array. Test your implementation in main(). 10. Write a max(int data) method for the ArrayFunctions class that returns the value of the largest element in the given array. Assume the array is nonempty, and test your implementation in main().
Accessing a field or method of a reference variable using a dot is sometimes called dereferencing the variable. Only variables declared with reference types can be dereferenced. If you try to dereference a variable declared with a primitive type, you well get an error. Object References Recall that reference types point to the object they refer to using a reference, rather than directly storing data like primitives. Given these assignments: int x = 17; String s = "This is a string"; it is helpful to imagine the difference like this: x: s: 17 "This is a string" because the actual contents of s are a reference to the string object.
A Concise Introduction to Data Structures Using Java by Mark J. Johnson