cpp/vectors/examples/vector

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Description
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An example of vectors.
Epilogue
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shown when solved

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

Correct answer
Template / Reference solution

Template / Reference solution

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

int main() {
vector<string> words; // CONSTRUCT
words.push_back("Hello"); // ADD to back end
words.push_back("World");
cout << words.size() << endl; // get SIZE
cout << words[0] << " " << words.at(1) << endl; // [i], at(): ACCESS

vector<int> nums(10); // CONSTRUCT with initial size 10
// or use: vector<int> nums; nums.resize(10);
for (int i=0; i<10; i++)
nums[i] = i*i; // assign
cout << nums.back() << endl; // ACCESS from back end
nums.pop_back(); // DELETE (pop) from back end

// FYI: iterator-type iteration (stay tuned in CS 104)
// but... it is more straightforward to use a normal for loop with size()
for (vector<int>::iterator it=nums.begin(); it != nums.end(); it++)
cout << *it << " ";

}

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

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e.g. ["java.util.*"]

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Override Java classname
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json list of websheet names in this folder
e.g. ["DataStructure"]

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Is example?
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Property	Value
Description html markup shown to student	An example of vectors.
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 <string> #include <vector> #include <iostream> using namespace std; int main() { vector<string> words; // CONSTRUCT words.push_back("Hello"); // ADD to back end words.push_back("World"); cout << words.size() << endl; // get SIZE cout << words[0] << " " << words.at(1) << endl; // [i], at(): ACCESS vector<int> nums(10); // CONSTRUCT with initial size 10 // or use: vector<int> nums; nums.resize(10); for (int i=0; i<10; i++) nums[i] = ii; // assign cout << nums.back() << endl; // ACCESS from back end nums.pop_back(); // DELETE (pop) from back end // FYI: iterator-type iteration (stay tuned in CS 104) // but... it is more straightforward to use a normal for loop with size() for (vector<int>::iterator it=nums.begin(); it != nums.end(); it++) cout << it << " "; }
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

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