By Mark J. Johnson
Designed for a CS2 information buildings direction, this article offers an intensive yet concise assessment of knowledge constructions in addition to a steady creation to Java. It makes use of a concise type and comprises pseudocode and workouts all through in order that scholars the best way to write code, instead of simply learn it. The publication covers all the major components taught in CS2 classes, together with arrays, lists, stacks, queues, recursion, maps, and trees. Read more...
Designed for a CS2 info constructions direction, this article presents an intensive yet concise assessment of knowledge constructions in addition to a steady creation to Java. It makes use of a concise type and contains pseudocode and workouts all through in order that scholars the way to write code, instead of simply learn it. The booklet covers the entire major components taught in CS2 classes, together with arrays, lists, stacks, queues, recursion, maps, and bushes
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Additional resources for A Concise Introduction to Data Structures Using Java
8. Write a method countWordIgnoreCase(String s, String target) that counts the number of times the word target occurs in the string s, ignoring case. ) Add your method to the StringFunctions class and test it in main(). 9. Write a Java method reverse(String s) for the StringFunctions class that returns a string consisting of the characters in s in reverse order. For example, reverse("abc") should return the string "cba". Test your method in main(). 10. Add a new linearSearch() method to the ArrayFunctions class that searches for a target string in an array of strings.
However, strings are immutable, meaning that once a String has been created its contents can never change. What happens behind the scenes, then, when executing s += "def" is that a new String object is created with the value "abcdef", and the reference s is changed to point to this new string instead of the old one that 12 A Concise Introduction to Data Structures Using Java contained "abc". Thus, string concatenation is relatively inefficient because it repeatedly generates new String objects.
Suppose t = "Java programming language". toLowerCase() 3. Suppose s = "stack", t = "queue", and u = "Stack". equalsIgnoreCase(u) 4. Suppose s = "stack", t = "queue", and u = "Stack". compareToIgnoreCase(u) A Brief Introduction to Java 15 5. Suppose s is a reference to a Java string. Write expressions to return each of these values: (a) The length of s (b) The third character in s (as in, the third character of “abcd” is “c”) (c) The substring of s consisting of its third through fifth characters (d) The substring of s consisting of its fourth character to the end 6.
A Concise Introduction to Data Structures Using Java by Mark J. Johnson