When you want a loop to iterate exactly n times, you will typically use one of...
When you want a loop to iterate exactly n times, you will typically use one of two standard for loops patterns (see p. 95-96):
- for (int i = 1; i <= n; i++)
- for (int i = 0; i < n; i++)
Although both of these for loops will output n times, they have different initialization and test conditions.
Please give two *examples to describe why it is beneficial to have both patterns. (i.e. think of the initialization condition and using i in your output - do you want 0 in the output?)
*Please do not use the examples from the text - think of your own examples. You can give me a "sample" output statement that would go inside each for loop or explain the situation in words.
Homework Answers
Below one from 0 to n-1 is helpful when using an array. Since
the indices start at 0 but not 1, it is very much easy to use below
way.
for (int i = 0; i < n; i++)
a[i] = user input
This one is good when we need something from 1 to n. For example
printing 1-10 number of asterisks on each line
for (int i = 1; i <= n; i++)
print i asterisks
Add Answer to:
When you want a loop to iterate exactly n times, you
will typically use one of...
(3 marks) Write exactly one for loop whose start condition is int i = 0; and...
(3 marks) Write exactly one for loop whose start condition is int i = 0; and whose end condition is i<n; such that your code fragment has a time complexity of O(n?). (3 marks) Write exactly three for loops that are nested inside of each other whose start conditions are int i = 0;, int j = 0;, and int k = 0;, respectively, and whose end conditions are i<n; j<n;, and k < n;, respectively, such that your code...
#include <iostream> #include <queue> using namespace std; class Graph { public: Graph(int n); ~Graph(); void addEdge(int...
#include <iostream>
#include <queue>
using namespace std;
class Graph {
public:
Graph(int n);
~Graph();
void addEdge(int src, int tar);
void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
Graph::Graph(int n=0) {
vertexCount = n;
edgeCount = 0;
if(n == 0)
adjMat = 0;
else {
adjMat = new bool* [n];
for(int i=0; i < n; i++)
adjMat[i] = new bool [n];
for(int i=0;...
is it possible to use getline inside for loop ? C++ string line; // these are...
is it possible to use getline inside for loop ? C++ string line; // these are just example so I am not writing whole codes... It seems it only works if I do getline(file, line) // I am doing this as in reading the file. But I guess you can think of getline(cin, string variable) as well and then I go (for int i=0; i < line.length(); i++) cout << line << endl; something like that. When I placed getline(file,...
15.6： Fix the code to print the count from 1 to x (to loop x times)...
15.6： Fix the code to print the count from 1 to x (to loop x times) #include <iostream> // include the header file using namespace std; void count(int x){ for(int i=1; i<=x; i++){ cout<<x; } } int main(){ int x,i; cin >> x; count(x); return 0; } 15.7 Fix the nested for loops to print the count from 1 to x twice, e.g. "12....x12.....x" #include <iostream> // include the header file using namespace std; int main(){...
Q1) How would you declare an array of doubles called myDoubles? Arrays can be initialized in...
Q1) How would you declare an array of doubles called myDoubles? Arrays can be initialized in one of two ways. In one method, the array elements are placed in a list enclosed in curly braces after the array name definition. For example, the code below creates an array of ints with 3 elements: 1, 2 and 3. int[] a = {1, 2, 3, 4}; We can also initialize an array with a new construct, indicating how many elements we want...
In C++ Programming, Try using loops only. This lab demonstrates the use of the While Loop...
In C++ Programming, Try using loops only. This lab demonstrates the use of the While Loop and the Do While Loop as error checking mechanisms. You will be using each of these loops to solve the same problem. Please put them both in the same program. When you test the code, you will not see a difference in the way they execute - but there will be a difference in the logic when writing the code. You will want to...
For this assignment, you will apply what you learned in analyzing for, while, and do-while loops...
For this assignment, you will apply what you learned in analyzing for, while, and do-while loops by writing these statements yourself. The Java™ program you write should do the following: Display a pyramid of asterisks onscreen (i.e., a nested for loop) Display the integers 10 to 1 in decreasing order, one number per line (i.e., a while/do-whlie loop) Add 7 until the sum becomes greater than 157, at which point the program should display both the sum and the number...
In C++ please. Thank you!! #include <iostream> #include <cstring> // print an array backwards, where 'first'...
In C++ please. Thank you!! #include <iostream> #include <cstring> // print an array backwards, where 'first' is the first index // of the array, and 'last' is the last index void writeArrayBackward(const char anArray[], int first, int last) { int i = 0; for (i = last; i >= first; i--) { std::cout << anArray[i]; } std::cout << std::endl; } // test driver int main() { const char *s = "abc123"; writeArrayBackward(s, 0, strlen(s) - 1); } // Using the...
I need this code in java. Loops do just what they sound like they should -...
I need this code in java. Loops do just what they sound like they should - they perform a statement again and again until a condition is fulfilled. For this lab you will be practicing using loops, specifically a for loop. The for loop takes the form of: for(/*variable initialization*/;/*stop condition*/; /*increment*/){ //statements to be done multiple times } Task Write an application that displays every perfect number from 2 through 1,000. A perfect number is one that equals the...
Declare an array with 1000 elements of type int Then in a loop generate 1000 random numbers and assign one to each element in the array The random numbers should be between 1 and 50 Then, prompt the user to enter a number, store this number in a local
Rules to follow are:Declare an array with 1000 elements of type intThen in a loop generate 1000 random numbers and assign one to each element in the arrayThe random numbers should be between 1 and 50do not use rand or srand, use code is providedThen, prompt the user to enter a number, store this number in a local variable, the number should be safety checked using the GetInteger() functionThen, iterate through the array and determine how many times the user's...
(3 marks) Write exactly one for loop whose start condition is int i = 0; and whose end condition is i<n; such that your code fragment has a time complexity of O(n?). (3 marks) Write exactly three for loops that are nested inside of each other whose start conditions are int i = 0;, int j = 0;, and int k = 0;, respectively, and whose end conditions are i<n; j<n;, and k < n;, respectively, such that your code...
#include <iostream>
#include <queue>
using namespace std;
class Graph {
public:
Graph(int n);
~Graph();
void addEdge(int src, int tar);
void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
Graph::Graph(int n=0) {
vertexCount = n;
edgeCount = 0;
if(n == 0)
adjMat = 0;
else {
adjMat = new bool* [n];
for(int i=0; i < n; i++)
adjMat[i] = new bool [n];
for(int i=0;...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago