Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 17, Problem 42RQE
Explanation of Solution
Map:
In C++, a “map” is an associative container, which is used to store elements.
- Each elements is divided into two divisions namely, a “key” and a “value”.
- Each “key” is used to find a value because; it is associated with that particular value.
- Hence it is referred as “key-value pairs”.
Difference between sequence container and associative container:
Sequence container | Associative container |
In this container elements are stored in linear manner... |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
#ifndef lab5ExF_h
#define lab5ExF_h
typedef struct point
{
char label[10];
double x ; // x coordinate for point in a Cartesian coordinate system
double y; // y coordinate for point in a Cartesian coordinate system
double z; // z coordinate for point in a Cartesian coordinate system
}Point;
void reverse (Point *a, int n);
/* REQUIRES: Elements a[0] ... a[n-2], a[n-1] exists.
* PROMISES: places the existing Point objects in array a, in reverse order.
* The new a[0] value is the old a[n-1] value, the new a[1] is the
* old a[n-2], etc.
*/
int search(const Point* struct_array, const char* target, int n);
/* REQUIRES: Elements struct-array[0] ... struct_array[n-2], struct_array[n-1]
* exists. target points to string to be searched for.
* PROMISES: returns the index of the element in the array that contains an
* instance of point with a matching label. Otherwise, if there is
* no point in the array that its label matches the target-label,
* it should return -1.
* If there are more than…
#include <bits/stdc++.h>#include<unordered_map>#include <string>
using namespace std;
struct Student{string firstName;string lastName;string studentId;double gpa;};
class MyClass{public:unordered_map<string, int>classHoursInfo;vector<Student> students;unordered_map<string, int> creditValue = {{"A", 4}, {"B", 3}, {"C", 2}, {"D", 1}, {"F", 0}};
void readStudentData(string filepath){cout << "reading student data \n";ifstream inpStream(filepath);string text;string tmp[4];while (getline (inpStream, text)) {string str = "", prevKey = ""; int j= 0;unordered_map<string, int> curStudentClassInfo;for(int i=0; i<text.length(); i++){if(isspace(text[i])){if(j>3){if(prevKey.length()==0){curStudentClassInfo[str] = 0;prevKey = str;str.clear();}else{curStudentClassInfo[prevKey] = creditValue[str];prevKey = "";str.clear();}}else{tmp[j++] = str;str.clear();}}else{str = str+text[i];}}if(str.length() != 0){curStudentClassInfo[prevKey] =…
A "generic" data structure cannot use a primitive type as its generic type.
O True
False
Chapter 17 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 17.2 - Prob. 17.1CPCh. 17.2 - Prob. 17.2CPCh. 17.2 - Prob. 17.3CPCh. 17.2 - Suppose you are writing a program that uses the...Ch. 17.2 - Prob. 17.5CPCh. 17.2 - Prob. 17.6CPCh. 17.2 - What does a containers begin() and end() member...Ch. 17.2 - Prob. 17.8CPCh. 17.2 - Prob. 17.9CPCh. 17.2 - Prob. 17.10CP
Ch. 17.3 - Write a statement that defines an empty vector...Ch. 17.3 - Prob. 17.12CPCh. 17.3 - Prob. 17.13CPCh. 17.3 - Write a statement that defines a vector object...Ch. 17.3 - What happens when you use an invalid index with...Ch. 17.3 - Prob. 17.16CPCh. 17.3 - If your program will be added a lot of objects to...Ch. 17.3 - Prob. 17.18CPCh. 17.3 - Prob. 17.19CPCh. 17.4 - Prob. 17.20CPCh. 17.4 - Write a statement that defines a nap named myMap....Ch. 17.4 - Prob. 17.22CPCh. 17.4 - Prob. 17.23CPCh. 17.4 - Prob. 17.24CPCh. 17.4 - Prob. 17.25CPCh. 17.4 - Prob. 17.26CPCh. 17.4 - Prob. 17.27CPCh. 17.5 - What are two differences between a set and a...Ch. 17.5 - Write a statement that defines an empty set object...Ch. 17.5 - Prob. 17.30CPCh. 17.5 - Prob. 17.31CPCh. 17.5 - Prob. 17.32CPCh. 17.5 - If you store objects of a class that you have...Ch. 17.5 - Prob. 17.34CPCh. 17.5 - Prob. 17.35CPCh. 17.6 - Prob. 17.36CPCh. 17.6 - What value will be stored in v[0] after the...Ch. 17.6 - Prob. 17.38CPCh. 17.6 - Prob. 17.39CPCh. 17.6 - Prob. 17.40CPCh. 17.6 - Prob. 17.41CPCh. 17.6 - Prob. 17.42CPCh. 17.7 - Prob. 17.43CPCh. 17.7 - Which operator must be overloaded in a class...Ch. 17.7 - Prob. 17.45CPCh. 17.7 - What is a predicate?Ch. 17.7 - Prob. 17.47CPCh. 17.7 - Prob. 17.48CPCh. 17.7 - Prob. 17.49CPCh. 17 - Prob. 1RQECh. 17 - Prob. 2RQECh. 17 - If you want to store objects of a class that you...Ch. 17 - If you want to store objects of a class that you...Ch. 17 - Prob. 5RQECh. 17 - Prob. 6RQECh. 17 - Prob. 7RQECh. 17 - If you want to store objects of a class that you...Ch. 17 - Prob. 9RQECh. 17 - Prob. 10RQECh. 17 - How does the behavior of the equal_range() member...Ch. 17 - Prob. 12RQECh. 17 - When using one of the STL algorithm function...Ch. 17 - You have written a class, and you plan to store...Ch. 17 - Prob. 15RQECh. 17 - Prob. 16RQECh. 17 - Prob. 17RQECh. 17 - Prob. 18RQECh. 17 - Prob. 19RQECh. 17 - Prob. 20RQECh. 17 - Prob. 21RQECh. 17 - A(n) ___________ container stores its data in a...Ch. 17 - _____________ are pointer-like objects used to...Ch. 17 - Prob. 24RQECh. 17 - Prob. 25RQECh. 17 - The _____ class is an associative container that...Ch. 17 - Prob. 27RQECh. 17 - Prob. 28RQECh. 17 - A _______ object is an object that can be called,...Ch. 17 - A _________ is a function or function object that...Ch. 17 - A ____________ is a predicate that takes one...Ch. 17 - A __________ is a predicate that takes two...Ch. 17 - A __________ is a compact way of creating a...Ch. 17 - T F The array class is a fixed-size container.Ch. 17 - T F The vector class is a fixed-size container.Ch. 17 - T F You use the operator to dereference an...Ch. 17 - T F You can use the ++ operator to increment an...Ch. 17 - Prob. 38RQECh. 17 - Prob. 39RQECh. 17 - T F You do not have to declare the size of a...Ch. 17 - T F A vector uses an array internally to store its...Ch. 17 - Prob. 42RQECh. 17 - T F You can store duplicate keys in a map...Ch. 17 - T F The multimap classs erase() member function...Ch. 17 - Prob. 45RQECh. 17 - Prob. 46RQECh. 17 - Prob. 47RQECh. 17 - Prob. 48RQECh. 17 - T F If two iterators denote a range of elements...Ch. 17 - T F You must sort a range of elements before...Ch. 17 - T F Any class that will be used to create function...Ch. 17 - T F Writing a lambda expression usually requires...Ch. 17 - T F You can assign a lambda expression to a...Ch. 17 - Prob. 54RQECh. 17 - Write a statement that defines an iterator that...Ch. 17 - Prob. 56RQECh. 17 - The following statement defines a vector of ints...Ch. 17 - Prob. 58RQECh. 17 - Prob. 59RQECh. 17 - The following code defines a vector and an...Ch. 17 - The following statement defines a vector of ints...Ch. 17 - Prob. 62RQECh. 17 - Prob. 63RQECh. 17 - Prob. 64RQECh. 17 - Look at the following vector definition: vectorint...Ch. 17 - Write a declaration for a class named Display. The...Ch. 17 - Write code that docs the following: Uses a lambda...Ch. 17 - // This code has an error. arrayint, 5 a; a[5] =...Ch. 17 - // This code has an error. vectorstring strv =...Ch. 17 - // This code has an error. vectorint numbers(10);...Ch. 17 - // This code has an error. vectorint numbers ={1,...Ch. 17 - Prob. 72RQECh. 17 - Prob. 73RQECh. 17 - // This code has an error. vectorint v = {6, 5, 4,...Ch. 17 - // This code has an error. auto sum = ()[int a,...Ch. 17 - Unique Words Write a program that opens a...Ch. 17 - Course Information Write a program that creates a...Ch. 17 - Prob. 3PCCh. 17 - File Encryption and Decryption Write a program...Ch. 17 - Prob. 5PCCh. 17 - Prob. 6PCCh. 17 - Prob. 7PCCh. 17 - Prob. 8PC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Dec2Hex function : def decimal_to_hex(number): hex_map = {0: '0', 1: '1', 2: '2', 3: '3', 4: '4', 5: '5', 6: '6', 7: '7', 8: '8', 9: '9', 10: 'A', 11: 'B', 12: 'C', 13: 'D', 14: 'E', 15: 'F'} hex_digits = [] while number > 0: hex_digits.append(hex_map[number % 16]) number //= 16 # Reverse the order of the hex digits and join them to form the final hex string hex_string = ''.join(reversed(hex_digits)) return f'0x{hex_string}' if hex_string else '0x0' Perform a Profile of your Dec2Hex function. Write a function that takes a timedate object as a parameter andcalculates the number of years from NOW to the time in the timedateobject. Add unit-testing code to your Dec2Hex exercise, and then perform aUnit test of the updated Dec2Hex code.arrow_forward#include <stdio.h>#include <stdlib.h>#include <time.h> struct treeNode { struct treeNode *leftPtr; int data; struct treeNode *rightPtr;}; typedef struct treeNode TreeNode;typedef TreeNode *TreeNodePtr; void insertNode(TreeNodePtr *treePtr, int value);void inOrder(TreeNodePtr treePtr);void preOrder(TreeNodePtr treePtr);void postOrder(TreeNodePtr treePtr); int main(void) { TreeNodePtr rootPtr = NULL; srand(time(NULL)); puts("The numbers being placed in the tree are:"); for (unsigned int i = 1; i <= 10; ++i) { int item = rand() % 15; printf("%3d", item); insertNode(&rootPtr, item); } puts("\n\nThe preOrder traversal is: "); preOrder(rootPtr); puts("\n\nThe inOrder traversal is: "); inOrder(rootPtr); puts("\n\nThe postOrder traversal is: "); postOrder(rootPtr);} void insertNode(TreeNodePtr *treePtr, int value) { if (*treePtr == NULL) { *treePtr = malloc(sizeof(TreeNode)); if (*treePtr != NULL) { (*treePtr)->data = value;…arrow_forwardConcatenate Map This function will be given a single parameter known as the Map List. The Map List is a list of maps. Your job is to combine all the maps found in the map list into a single map and return it. There are two rules for addingvalues to the map. You must add key-value pairs to the map in the same order they are found in the Map List. If the key already exists, it cannot be overwritten. In other words, if two or more maps have the same key, the key to be added cannot be overwritten by the subsequent maps. Signature: public static HashMap<String, Integer> concatenateMap(ArrayList<HashMap<String, Integer>> mapList) Example: INPUT: [{b=55, t=20, f=26, n=87, o=93}, {s=95, f=9, n=11, o=71}, {f=89, n=82, o=29}]OUTPUT: {b=55, s=95, t=20, f=26, n=87, o=93} INPUT: [{v=2, f=80, z=43, k=90, n=43}, {d=41, f=98, y=39, n=83}, {d=12, v=61, y=44, n=30}]OUTPUT: {d=41, v=2, f=80, y=39, z=43, k=90, n=43} INPUT: [{p=79, b=10, g=28, h=21, z=62}, {p=5, g=87, h=38}, {p=29,…arrow_forward
- #include <stdio.h>#include <stdlib.h>#include <time.h> struct treeNode { struct treeNode* leftPtr; int data; struct treeNode* rightPtr;}; typedef struct treeNode TreeNode;typedef TreeNode* TreeNodePtr; void insertNode(TreeNodePtr* treePtr, int value);void inOrder(TreeNodePtr treePtr);void preOrder(TreeNodePtr treePtr);void postOrder(TreeNodePtr treePtr); int main(void) { TreeNodePtr rootPtr = NULL; srand(time(NULL)); puts("The numbers being placed in the tree are:"); for (unsigned int i = 1; i <= 10; ++i) { int item = rand() % 15; printf("%3d", item); insertNode(&rootPtr, item); } puts("\n\nThe preOrder traversal is: "); preOrder(rootPtr); puts("\n\nThe inOrder traversal is: "); inOrder(rootPtr); puts("\n\nThe postOrder traversal is: "); postOrder(rootPtr);} void insertNode(TreeNodePtr* treePtr, int value) { if (*treePtr == NULL) { *treePtr = malloc(sizeof(TreeNode)); if…arrow_forward#include using namespace std; struct ListNode { string data; ListNode *next; }; int main() { ListNode *p, *list; list = new ListNode; list->data = "New York"; p new ListNode; p->data = "Boston"; list->next = p; p->next = new ListNode; p->next->data = "Houston"; p->next->next = nullptr; // new code goes here Which of the following code correctly deletes the node with value "Boston" from the list when added at point of insertion indicated above? O list->next = p; delete p; O p = list->next; %3D list->next = p->next; delete p; p = list->next; list = p->next; delete p; O None of these O p = list->next; %3D list->next = p; %3D delete p;arrow_forwardUnique Values This function will receive a single map parameter known as a_map. a_map will contain a single letter as a string and numbers as values. This function is supposed to search a_map to find all values that appear only once in a_map. The function will create another map named to_ret. For all values that appear once in a_map the function will add the value as a key in to_ret and set the value of the key to the key of the value in a_map (swap the key-value pairs, since a_map contains letters to numbers, to_ret will contain Numbers to Letters). Finally, the function should return to_ret. Signature: public static HashMap<String, Integer> uniqueValues(HashMap<Integer, String> a_map) Example: INPUT: {0=M, 2=M, 3=M, 5=M, 6=n, 7=M, 9=M}OUTPUT: {n=6} INPUT: {0=A, 1=c, 2=c, 4=c, 5=a, 8=Q, 9=c}OUTPUT: {A=0, a=5, Q=8}arrow_forward
- Data structures find_color(colors:set, values:list) -> list The function will have two parameters. The first parameter is a set of strings known as Colors. A second parameter is a list of tuple-2 known as Values. Colors will contain a set of randomly selected colors. Values will contain a list of tuples of size 2. Each tuple will contain color (str) and a number (int). The function should look at each tuple in Values. For each tuple, add the number (the second value in the tuple) to a list of numbers if the color in the tuple (the first value in the tuple) is in Colors. In other words, find all tuples that have a color in the Colors and add the tuples numbers to a list. Finally, the function should return the list of numbers collected in the order they are found in the values list. Example: Colors: {'black', 'pink', 'yellow'} values: [('green', 100), ('yellow', 13), ('red', 6)] Expected: [13] Colors: {'yellow'} values: [('black', 54), ('pink', 5)] Expected: [] Colors: {'black',…arrow_forwardjavascript Define a function, myIncludes, that accepts two parameters: an array and a searchValue. myIncludes should return true if the searchValue is an element in the array. Otherwise, myIncludes should return false. example myIncludes([10, 20, 30], 20); // => true myIncludes(['apples', 'bananas', 'citrus'], 'pears'); // => falsearrow_forwardCheck 1 ALLLEURE #include #include using namespace std; void PrintSize(vector numsList) { cout intList (2); PrintSize(intList); cin >> currval; while (currVal >= 0) { } Type the program's output intList.push_back(currval); cin >> currval; PrintSize(intList); intList.clear(); PrintSize(intList); return 0; CS Scanned with Calin canner Janviantars Input 12345-1 Output Feedback? 口口。arrow_forward
- Count dominators def count_dominators(items): An element of items is said to be a dominator if every element to its right (not just the one element that is immediately to its right) is strictly smaller than it. By this definition, the last item of the list is automatically a dominator. This function should count how many elements in items are dominators, and return that count. For example, dominators of [42, 7, 12, 9, 13, 5] would be the elements 42, 13 and 5. Before starting to write code for this function, you should consult the parable of "Shlemiel the painter" and think how this seemingly silly tale from a simpler time relates to today's computational problems performed on lists, strings and other sequences. This problem will be the first of many that you will encounter during and after this course to illustrate the important principle of using only one loop to achieve in a tiny fraction of time the same end result that Shlemiel achieves with two nested loops. Your workload…arrow_forwardPlease fill in to-do 15 #ifndef _operations_hpp_#define _operations_hpp_ #include <forward_list>#include <list>#include <map>#include <string>#include <unordered_map>#include <utility>#include <vector> #include "book.hpp" struct remove_from_bst { // Function takes a constant Book as a parameter, finds and removes from the // binary search tree the book with a matching ISBN (if any), and returns // nothing. If no Book matches the ISBN, the method does nothing. void operator()(const Book& book) { ///////////////////////// TO-DO (15) ////////////////////////////// // Write the lines of code to remove the book from "my_bst" that has an ISBN // matching "book". /////////////////////// END-TO-DO (15) //////////////////////////// }arrow_forwardВ.width; } { t = B.type; w = { T.type = C.type; T.width = C.width; } T → B C В > int { B.type = integer; B.width 4; } В — foat { B.type = float; B.width = 8; } { C.type = t; C.width = w; } C - [ num] C1 = array(num. value, C1.type); { C.type C.width = num. value x C1. width; }arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education