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Description
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shown to student

We want to see the output <tt>0 1 2 3 4 5</tt> from either approach of filling a <tt>deque<int></tt> at the back or from the front.

Both seem to have a problem in that they don't yield what we expect when we print the deque. Try both and then let your instructor
show you how to use conditional compilation to try both approaches and add some debug statements that can easily removed.

Learning goal: 
<ul><li>Use #define, #ifdef, #ifndef, #else, #endif </li>
<li>Understand their use to have different code be compiled more easily.</li>
</ul>
Epilogue
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shown when solved

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Remarks
Comments, history, license, etc.

Copied from problem cpp/cs104/classes/default-args (author: redekopp@usc.edu)
Copied from problem cpp/cs104/classes/ctor-default (author: redekopp@usc.edu)
Copied from problem cpp/cs104/classes/constructor_init (author: redekopp@usc.edu)

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

int main()
{
\[
REDACTED
\show:
deque<int> q(5);

// Fill at back approach
//cout << "Fill at back" << endl;
//for(int i=0; i<5; i++){
// q.push_back(i);
//}

// Fill from front approach
cout << "Fill from front" << endl;
for(int i=4; i>0; i--){
q.push_front(i);
}

]\
for(size_t i = 0; i < q.size(); i++){
cout << q[i] << " ";
}
cout << endl;
return 0;
}

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	We want to see the output <tt>0 1 2 3 4 5</tt> from either approach of filling a <tt>deque<int></tt> at the back or from the front. <p>Both seem to have a problem in that they don't yield what we expect when we print the deque. Try both and then let your instructor show you how to use <strong>conditional compilation to try both approaches</strong> and add some debug statements that can easily removed.</p> <p><strong>Learning goal:</strong> </p> <ul><li>Use #define, #ifdef, #ifndef, #else, #endif </li> <li>Understand their use to have different code be compiled more easily.</li> </ul>
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Copied from problem cpp/cs104/classes/default-args (author: redekopp@usc.edu) Copied from problem cpp/cs104/classes/ctor-default (author: redekopp@usc.edu) Copied from problem cpp/cs104/classes/constructor_init (author: redekopp@usc.edu) remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <iostream> #include <deque> #include <vector> using namespace std; int main() { \[ REDACTED \show: deque<int> q(5); // Fill at back approach //cout << "Fill at back" << endl; //for(int i=0; i<5; i++){ // q.push_back(i); //} // Fill from front approach cout << "Fill from front" << endl; for(int i=4; i>0; i--){ q.push_front(i); } ]\ for(size_t i = 0; i < q.size(); i++){ cout << q[i] << " "; } cout << endl; return 0; }
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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