cpp/vectors/matrix Source

Viewing cpp/vectors/matrix by daveagp@gmail.com. You have unsaved changes. Log in above to create, edit, preview and publish Websheets.

Property Value

Description
html markup
shown to student

Defining vectors-of-vectors with a given size.

Epilogue
html markup
shown when solved

remove
Public permissions remove
Remarks
Comments, history, license, etc.

remove
Engine
Choices
json list of string, bool pairs
e.g. [["good", true], ["bad", false]]

Correct answer
Template / Reference solution

Template / Reference solution

#include <vector>
#include <iostream>
using namespace std;

void print_matrix(vector<vector<int> > M) {
for (int r=0; r<\[M.size()]\; r++) {
for (int c=0; c<\[M[0].size()]\; c++) {
cout << M[r][c] << " ";
}
cout << endl;
}
}

int main() {
// create a 3-by-3 matrix of zeros
vector<vector<int> > nine_zeros(3, vector<int>(3, 0));
// create a 2 row, 4 column matrix of ones
vector<vector<int> > two_by_four\[(2, vector<int>(4, 1))]\;

print_matrix(nine_zeros);
cout << endl;
print_matrix(two_by_four);
}

Java test suite
See manual

C++ test suite
json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]
to just run once with no input use [{}]

[
{}
]

C++ test suite
See manual

Forbidden substrings
json list of strings
e.g. ["for","while"]

remove
Solution visibility remove
Java imports
json list of importables
e.g. ["java.util.*"]

remove
Override Java classname
else defaults to
websheet name
remove
Dependent on other websheets?
json list of websheet names in this folder
e.g. ["DataStructure"]

remove
Is example?
i.e., just a demo
remove
Add compiler flag(s)
json list of flags
e.g. ["-Wno-unused-variable"]

remove
Remove default compiler flag(s)
json list of flags
see default_cppflags
e.g. ["-Wno-write-strings"]

remove

Property	Value
Description html markup shown to student	Defining vectors-of-vectors with a given size.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <vector> #include <iostream> using namespace std; void print_matrix(vector<vector<int> > M) { for (int r=0; r<\[M.size()]\; r++) { for (int c=0; c<\[M[0].size()]\; c++) { cout << M[r][c] << " "; } cout << endl; } } int main() { // create a 3-by-3 matrix of zeros vector<vector<int> > nine_zeros(3, vector<int>(3, 0)); // create a 2 row, 4 column matrix of ones vector<vector<int> > two_by_four\[(2, vector<int>(4, 1))]\; print_matrix(nine_zeros); cout << endl; print_matrix(two_by_four); }
Java test suite See manual
C++ test suite json list of stdin/args tests e.g. `[{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]` to just run once with no input use `[{}]`	[ {} ]
C++ test suite See manual
Forbidden substrings json list of strings e.g. `["for","while"]`	remove
Solution visibility	remove
Java imports json list of importables e.g. `["java.util.*"]`	remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. `["DataStructure"]`	remove
Is example? i.e., just a demo	remove
Add compiler flag(s) json list of flags e.g. `["-Wno-unused-variable"]`	remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. `["-Wno-write-strings"]`	remove

Optional properties:

Note: problems are open-source by default (see 'Public permissions'). Assumed license for open problems is Creative Commons 4.0 Attribution-ShareAlike unless specified in 'Remarks'.