Data Structures and Algorithms in Java
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781119278023
Author: Michael T. Goodrich; Roberto Tamassia; Michael H. Goldwasser
Publisher: Wiley Global Education US
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Chapter 3, Problem 19C

Explanation of Solution

Methods add() and remove() for Scoreboard class without any loops:

Code for add() method:

//Define the add() method to add a new score to collection

public void add(GameEntry e)

{

/*Check whether the "numEntries" is less than length of board. */

  if (numEntries < board.length)

  {

  //Assign the new entry to score board

  board[numEntries] = e;

  //Increment "numEntries" by "1"

  numEntries++;

  }

}

Explanation:

In the above code,

  • This method accepts the input parameter of “e” to add a new score entry to collection of score board.
  • Check whether the “numEntries” is less than length of board. If yes,
    • Assign the new entry to score board.
    • Increment “numEntries” by “1”.

Code for remove() method:

/*Define the remove() method to remove and return a high score from collection. */

public GameEntry remove(int i) throws IndexOutOfBoundsException

{

/*Check whether the "i" is less than "0" and "i" is greater than "numEntries"...

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Exercise 1 Function and Structure [30 pts] Please debug the following program and answer the following questions. There is a cycle in a linked list if some node in the list can be reached again by continuously following the next pointer. #include typedef struct node { int value; struct node *next; } node; int 11_has_cycle (node *first) if (first == node *head = { NULL) return 0; first; while (head->next != NULL) { } if (head first) { return 1; } head = head->next; return 0; void test ll_has_cycle () { int i; node nodes [6]; for (i = 0; i < 6; i++) { nodes [i] .next = NULL; nodes [i].value = i; } nodes [0] .next = &nodes [1]; nodes [1] .next = &nodes [2]; nodes [2] .next = &nodes [3]; nodes [3] .next nodes [4] .next &nodes [4]; NULL; nodes [5] .next = &nodes [0]; printf("1. Checking first list for cycles. \n Function 11_has_cycle says it has s cycle\n\n", 11_has_cycle (&nodes [0])?"a":"no"); printf("2. Checking length-zero list for cycles. \n Function 11_has_cycle says it has %s…
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