/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 11 Suppose that intList is a vector... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 22: Problem 11

Suppose that intList is a vector container and: intList = {18, 24, 24, 5, 11, 56, 27, 24, 2, 24} Furthermore, suppose that: vector::iterator lastElem; ostream_iterator screen(cout, " "); vector otherList(10); lastElem = remove_copy(intList.begin(), intList.end(), otherList.begin(), 24); What is the output of the following statement? copy(otherList.begin(), lastElem, screenOut);

Short Answer

Expert verified
The output is: 18 5 11 56 27 2

Step by step solution

01

Understand the Problem

The task requires copying elements from `intList` to `otherList`, excluding the value `24`. We use `remove_copy` to perform this operation and identify the range in `otherList` excluding `24`.
02

Identify the Function and Parameters

The `remove_copy` function copies elements from a range (here `intList`) to another location (here `otherList`) while omitting all occurrences of a specified value (`24`). It returns an iterator to the end of the resulting range.
03

Analyze the Source Vector

Let's examine `intList`. Its elements are: `{18, 24, 24, 5, 11, 56, 27, 24, 2, 24}`. Our goal is to remove all occurrences of `24` while copying to `otherList`.
04

Apply remove_copy and Determine Result Length

By applying `remove_copy`, the values `18, 5, 11, 56, 27, 2` are copied into `otherList`, as these are the elements not equal to `24`. `remove_copy` returns an iterator pointing just past the last element copied, which we store in `lastElem`.
05

Examine otherList

After executing `remove_copy`, the `otherList` contains `{18, 5, 11, 56, 27, 2}` in its first six slots. The rest of `otherList` remains unchanged but is irrelevant for the next operation.
06

Determine Output Using copy Function

The statement `copy(otherList.begin(), lastElem, screenOut);` will output the elements from the beginning of `otherList` to `lastElem`. Thus, the output is the first six elements: `18 5 11 56 27 2`.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Vector Containers
In C++, a vector container is a dynamic array that can change its size automatically. It is part of the Standard Template Library (STL) and is highly versatile for handling arrays of data. Vectors are similar to arrays but are more flexible because they can grow and shrink in size.
Here are some key features:
  • Dynamic Size: Vectors automatically manage memory and can resize to accommodate additional elements.
  • Index Access: Like arrays, vectors support fast and random access to elements using indices.
  • Iterators: Vectors provide iterator support, enabling traversal and manipulation using STL algorithms.
Working with vectors involves defining them using `std::vector` and providing a data type. In this exercise, `intList` is an example of a vector container storing integers, allowing for operations such as copying and removing elements.
Remove_Copy Function
The `remove_copy` function is part of the C++ STL algorithms and is used for copying elements from one range to another while excluding certain values. It performs an efficient operation without altering the original elements, ensuring all specified unwanted elements are omitted in the target container.
When using `remove_copy`, there are key components to consider:
  • Source Range: The range from which elements are copied. In the exercise, it is `intList.begin()` to `intList.end()`.
  • Destination Start: The beginning of where to store the copied data, which is `otherList.begin()` in this case.
  • Element to Exclude: The specific value to be omitted, here it is `24`.
  • The function returns an iterator pointing to one past the last copied element in `otherList`.
By using `remove_copy`, only values not equal to `24` are transferred, resulting in a cleaned-up list that excludes the specified element.
Iterator Usage
Iterators play a crucial role in the operation of STL algorithms by providing a way to access container elements sequentially without exposing their underlying structure. They act as pointers that iterate through the elements of a vector or other container types.
In this context:
  • An "iterator to the beginning" is used to mark where the copying starts in `intList` and `otherList`.
  • Another iterator, `lastElem`, indicates where copying ends in `otherList` as returned by `remove_copy`.
  • STL algorithms like `copy` and `remove_copy` utilize iterators to function seamlessly with different types of containers.
Using iterators ensures efficient navigation and manipulation of containers without directly interacting with the elements themselves, thereby maintaining abstraction and integrity of data.
Output Streams
Output streams in C++ handle the output operations, directing data to the console or to files. The standard output stream `cout` is used for console display, enhanced by functions and iterators for formatted output.
With `ostream_iterator`, as seen in the exercise, you can:
  • Stream data directly to `cout`, facilitating easy display of container elements.
  • Specify a delimiter that separates elements, in this case, a space (" ").
  • Use it with `copy` to print elements in the range from `otherList.begin()` to `lastElem`.
By applying `ostream_iterator`, you can efficiently execute a piping mechanism that aligns data streams for immediate display, bridging container data with user-readable output.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Suppose that setA, setB, setC, and setD are defined as follows: int setA[] = {3, 4, 5, 8, 9, 12, 14}; int setB[] = {2, 3, 4, 5, 6, 7, 8}; int setC[] = {2, 5, 5, 9}; int setD[] = {4, 4, 4, 6, 7, 12}; Further suppose that you have the following declarations: int AunionB[10]; int AunionC[9]; int BunionD[10]; int AintersectB[4]; int AintersectC[2]; What is stored in AunionB, AunionC, BunionD, AintersectB, and AintersectC after the following statements execute? set_union(setA, setA + 7, setB, setB + 7, AunionB); set_union(setA, setA + 7, setC, setC + 4, AunionC); set_union(setB, setB + 7, setD, setD + 6, BunionD); set_intersection(setA, setA + 7, setB, setB + 7, AintersectB); set_intersection(setA, setA + 7, setC, setC + 4, AintersectC);

Suppose that intList is a vector container and: intList = {2, 4, 6, 8, 10, 12, 14, 16} What is the value of result after the following statement executes? result = accumulate(intList.begin(), intList.end(), 0);

What are the three main components of the STL?

Suppose that intList is a vector container and: intList = {2, 4, 6, 8, 10, 12, 14, 16} What is the value of result after the following statement executes? result = accumulate(intList.begin(), intList.end(), 0, multiplies());

Suppose that vecList is a vector container and: vecList = {12, 16, 8, 23, 40, 6, 18, 9, 75} Show vecList after the following statement executes: copy(vecList.begin() + 2, vecList.end(), vecList.begin());
See all solutions

Recommended explanations on Computer Science Textbooks

Cloud Services

Read Explanation

Computer Network

Read Explanation

Functional Programming

Read Explanation

Databases

Read Explanation

Blockchain Technology

Read Explanation

Computer Systems

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.