Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Chapter 20, Problem 2SA
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Queue:
A queue is a linear data structure used to store a set of data and is the collection of data that uses FIFO (first-in-first-out) order for performing operations.
- Queue is opened at both its ends. One end is for inserting items to the queue called “rear” end and the other end is for removing the items from the queue called “front” end.
- Two basic operations done on queue are,
- enqueue() – add an item to queue.
- dequeue() – remove an item from the queue.
- When the “enqueue()” method is invoked, it checks whether the queue is full or not.
- If the queue is full, it throws an exception.
- If the queue has slots available, then element is added at the “rear” end...
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Computer science What is a collection (a container instance)?
class Solution(object):
def longestCommonPrefix(self, strs):
result =""
for i in strs[0]:
for j in strs[1]:
for k in strs[2]:
if i == j and i == k:
result+=i
if len(result) >0:
return result
else:
return result
IndexError: list index out of range for j in strs[1]: Line 5 in longestCommonPrefix (Solution.py) ret = Solution().longestCommonPrefix(param_1) Line 31 in _driver (Solution.py) _driver() Line 41 in <module> (Solution.py)
can someone explain why this is wrong?
Data Structures/Algorithms in Java
Chapter 20 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 20.3 - Prob. 20.1CPCh. 20.3 - Prob. 20.2CPCh. 20.3 - Prob. 20.4CPCh. 20.3 - Prob. 20.5CPCh. 20.6 - Prob. 20.6CPCh. 20.6 - Prob. 20.7CPCh. 20.6 - Prob. 20.8CPCh. 20.6 - Prob. 20.9CPCh. 20 - Prob. 1MCCh. 20 - Prob. 2MC
Ch. 20 - Prob. 3MCCh. 20 - The concept of seniority, which some employers use...Ch. 20 - Prob. 5MCCh. 20 - Prob. 6MCCh. 20 - Prob. 8TFCh. 20 - Prob. 9TFCh. 20 - Prob. 10TFCh. 20 - Prob. 1FTECh. 20 - Prob. 2FTECh. 20 - Prob. 3FTECh. 20 - Prob. 4FTECh. 20 - Prob. 5FTECh. 20 - Prob. 1AWCh. 20 - Prob. 2AWCh. 20 - Suppose that you have two stacks but no queues....Ch. 20 - Prob. 1SACh. 20 - Prob. 2SACh. 20 - Prob. 3SACh. 20 - Prob. 4SACh. 20 - Prob. 5SACh. 20 - Prob. 6SA
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- the concept of iterators and how they are better than using a regular loop to process the items in a collection.arrow_forwardDon't copy from anywhere... please fast... typed answer Assignment: Linked List of Students You have been tasked with implementing a program in Java that uses a linked list to store and manage a list of students in a class. Each student should have a name and a grade. Your program should include the following classes: Student: Represents a student in the class. Each student should have a name and a grade. Node: Represents a node in the linked list. Each node should store a reference to a student and a reference to the next node in the list. LinkedList: Represents the linked list itself. Each linked list should have a reference to the first node in the list. Your task is to implement these classes using a linked list and demonstrate their functionality by creating a console-based interface for users to interact with the system. Your program should allow users to: Add a new student to the class at the end of the list. View information about a student, including their name and grade.…arrow_forwardWhat are the advantages of Java's Collection Framework?arrow_forward
- Generics enable you to specify the exact type that will be stored in a collection and give you the benefits of compile-time type checking—the compiler issues error messages if you use inappropriate types in your collections. Once you specify the type stored in a generic collection, any reference you retrieve from the collection will have that type. Instructions Write a program that inserts 25 random integers from 0 to 100 in order into Java’s LinkedList object (you must use Java’s LinkedList class to get any credit for this assignment). The program must: sort the elements, then calculate the sum of the elements, and calculate the floating-point average of the elements. For this assignments make sure that your screen shot(s) show your program running and that your runtime display shows your random list, sorted list, sum of the elements, and average of the elements. You only get credit for what you demonstrate. Below is a sample screen shot. Your output doesn’t have to look…arrow_forwardC#: What is the definition of a "Collection"? List the many types of collections that exist.arrow_forwardWhat are the advantages of using Java's Collection Framework, and why should one utilize it?arrow_forward
- what are the prerequisites of an interface and why what you explain here aligns .arrow_forwarddef get_task(task_collection, ...): """ param: task_collection (list) - holds all tasks; maps an integer ID/index to each task object (a dictionary) param: ... (str) - a string that is supposed to represent an integer ID that corresponds to a valid index in the collection returns: 0 - if the collection is empty. -1 - if the provided parameter is not a string or if it is not a valid integer Otherwise, convert the provided string to an integer; returns None if the ID is not a valid index in the list or returns the existing item (dict) that was requested. """arrow_forwardWhat collection-type data type is most useful with data values that are heterogeneous and may be processed differently? record data types arrays associative arrays hashesarrow_forward
- Differentiate between ArrayList and LinkedList.arrow_forwardProblem You want to implement a custom class that mimics the behavior of a common built-in container type, such as a list or dictionary. However, you're not entirely sure what methods need to be implemented to do it.arrow_forwardExplain the purpose of the Comparable interface in Java and how it is used in sorting collections.arrow_forward
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