CodeGraderBench/CodeGraderBench huggingface dataset:
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;
void swap(char*a,char*b)
{char* temp=a;
 a=b;
b=temp;
return;
}
int string_length(char*a)
{  int l=0;
while(a[l]!='\0')l++;
return l;
}

void bubble(char*A,int n)
{   int i,j;
  for(int i=0;i<n-1;i++)
   {
      for(j=0;j<n-i-1;j++)
       { 
         if(A[j]<A[j+1])
          swap(&A[j],&A[j+1]);
       }
  }
}
char string_sort(char*a, int l)
{
  char b[11];
for(int i=0;i<l;i++)
 {      b[i]=int('a[i]');
}
 bubble(b,l);
char c[11];
for(int i=0;i<l;i++)
{  c[i]=char(b[i]);
}
return ;
int string_compare(char*a,char*b)
{      int i=0;
while(true)
   {      if(a[i]==0&&b[i]==0) return 0;
          if(a[i]==0) return -1;
          if(b[i]==0) return +1;
          if(a[i]<b[i]) return -1;
          if(a[i]>b[i]) return +1;
i++;
} return 0;
}



int main()
{
int n;
cin>>n;
char s[n][11];
for(int i=0;i<n;i++)
{     cin.getline(s[i],11);
}
cout<<string_sort(s[i],11);
string_compare();
}
}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;
int IsIncreasingDecreasing(int *A, int n){
 int i=1; int b=A[0]; int c=0, d=0;
 while(i<n){
  if(b>A[i]) c+=1; 
  else d+=1;
  b=A[i];
  i+=1; }
 if(n==1) return 1;
 if (c==n-1) return 2; 
 else if(d==n-1) return 1;
 else return 3; }
int main(){
 int n; cin>>n;
 int arr[n]; 
 for(int i=0; i<n; i++) {cin>>arr[i];}
 cout<<IsIncreasingDecreasing(arr, n);}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;

int string_compare (char *first, char * second){
    int i = 0;
    while (true){
        if (first[i] == 0 && second[i] == 0) return 0;
        if (first[i] == 0) return +1;
        if (second[i] == 0) return -1;
        if (first[i] < second[i]) return +1;
        if (first[i] > second[i]) return -1;
        i++;
    }
return 0;
}

void string_copy (char dest[] , char source[] ) {
	int i;
	for(i=0; source[i] != 0 ;i++){
		dest[i] = source[i];
	}
	dest[i] = source[i];
	}

void string_swap(char a[][12] , int n1 , int n2 ){
    char temp[12];
    string_copy( temp , a[n2]);
    string_copy( a[n2] , a[n1] );
    string_copy( a[n1] , temp );
}


void string_sort(char a[][12], int n ){
    int p=0 , q=0;
    
    for(int i=0 ; i<n-1 ; i++){
        for(int j=0 ; j<n-1-i ; j++){
            p++;
            if( string_compare( a[j] , a[j+1] )==1 ) {
                
                string_swap( a , j , j+1);
                q++;
            }
        }
       
    }
    for(int i=0 ; i<n ; i++){
        cout<<a[i]<<endl;
    }
    cout<<p<<endl;
    cout<<q<<endl;
}

int main(){
    int n;
    cin>>n;
    char arr[n][12];
    for(int i=0 ; i< n ; i++){
        cin>>arr[i];
    }
    string_sort( arr , n); //to sort in rev order and print
    
}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
#define max 100
using namespace std;
int len(char *s){
int L = 0;
while (x[L] != ‘\0’) L++;
return L;

}
int string_compare(char *s1,char *s2){
int i=0;
while(1){
if(s1[i]==0 && s2[i]==0) return 0;
if(s1[i]==0) return 1;
if(s2[i]==0) return -1;
if(s1[i]<s2[i]) return 1;
if(s1[i]>s2[i]) return -1;
i++;
}
return 0;
}

void string_sort(char *s){
for(int i=0;i<n-1;i++){
for(int j=0;j<n-1;;j++){
if(string_compare(A[j],A[j+1])==1){

}
}
}
}

}
int main(){
int n;
cin>>n;
char str[12];
char A[max][max];
for(int i=0;i<n;i++){
cin>>str;
for(int j=0;j<12;j++){
A[i][j]=str[j];
}
}

}
}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;

int string_compare (char x[][12], int m, int n)
{
int i = 0;
while (true){
if (x[m][i] == 0 && x[n][i] == 0) return 0;
if (x[m][i] == 0) return +1;
if (x[n][i] == 0) return -1;
if (x[m][i] < x[n][i]) return +1;
if (x[m][i] > x[n][i]) return -1;
i++;
}
return 0;
}

void string_sort (char x[][12], int n)
{
for (int i=0; i<n-1; i++)
	{
	for (int j=0; j<n-1-i; j++)
		{
		if (string_compare(x, j, j+1)==1)
			{
			char temp= *x[j];
			*x[j]=*x[j+1];
			*x[j+1]=temp;
			}
		}
	}
}

int main ()
{
int n;
cin>>n;
char x[n][12];

for (int i=0; i<n+1; i++)
	{
	cin.getline(x[i], 12);
	}
string_sort (x, n);
for (int i=0; i<n+1; i++)
	{
	cout<<x[i]<<'\n';
	}

}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;
int string_compare(char*a, char*b){
int i=0; while(true){
if (a[i]==0 && b[i]==0) cout<<"0";break;
if (a[i]==0) cout<<" +1";break;
if (b[i]==0) cout<<" -1";break;
if (a[i]<b[i]) cout<< "+1";break;
if( b[i]<a[i]) cout<<" -1";break;
i++;
}
return 0;
}

int main(){
char a[11];char b[11];
cin>>a;
cin>>b;
string_compare(a,b);
}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: C
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;

int string_length (char *x)
{
	int L = 0;
	while (x[L] !=0) L++;
return L;
}

void swap (char **a, char **b){
char temp = **a; **a = **b; **b = temp; return;
}


int string_compare (char *first, char * second){
	int i = 0;
	while (true){
		if (first[i] == 0 && second[i] == 0) return 0;
		if (first[i] == 0) return -1;
		if (second[i] == 0) return +1;
		if (first[i] < second[i]) return -1;
		if (first[i] > second[i]) return +1;
		i++;
	}
	return 0;	
}

int string_sort(char A[][12],int n){
	int i, j;
	for (i = 0; i < n - 1; i++){
		for (j = 0; j < n - i - 1; j++){
			if(string_compare(A[j],A[j+1])==-1){
	                swap(A[j], A[j + 1]);
	                q++;
	                }
        }
    }
    return q;
}

int main(){
	int n,p=0,q=0;
	cin>>n;
	char A[n][12];
	for(int i=0;i<n;i++){
		cin>>A[i];
	}
	for(int i=0;i<n;i++){
		string_sort(A,n);
		cout<<A[i]<<endl;
		}
	cout<<p<<endl;
	cout<<q;
}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: B
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<simplecpp>
#include<cstring>
int string_compare (char *first, char * second){
int i = 0;
while (true){
	if (first[i] == 0 && second[i] == 0) return 0;
	if (first[i] == 0) return +1;
	if (second[i] == 0) return -1;
	if (first[i] < second[i]) return +1;
	if (first[i] > second[i]) return -1;
	i++;
}

}

void swap(char* a, char* b){
	char temp[11];
	
	strcpy (temp,a);
	strcpy (a,b);
	strcpy (b,temp);
	
	}

void string_sort(char c[][11], int n){
	int cswap, ccomp;
	cswap=ccomp=0;
	int i, j;
    for (i = 0; i < n - 1; i++)
    {
        for (j = 0; j < n - i - 1; j++)
        {	ccomp=ccomp+1;
        	if ((string_compare(c[j],c[j+1])==-1)){
        		swap(c[j], c[j+1]);
        		cswap=cswap+1;
        	}                    
        }
    }

  
    for (int i=0; i<n; i++){
		cout << c[i]<< " ";
}
cout << endl;
		  cout << ccomp << endl;
	cout<<cswap;

	
	
}


main_program{
	int n;
	cin >> n;
	char c[n][11];
	for (int i=0; i<n; i++){
		cin >> c[i];
	}
string_sort(c, n);

}

Grading criterion: Quality of variable names
Rating A: Good Variable Names
Rating B: Ok Variable Names
Rating C: Poor Variable Names
Rating D: 0
Assigned grade: B
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>

using namespace std;
#define MAX 100;

int string_compare (char* first, char * second){
int i = 0;
while (true){
if (first[i] == 0 && second[i] == 0) return 0;
if (first[i] == 0) return +1;
if (second[i] == 0) return -1;
if (first[i] < second[i]) return +1;
if (first[i] > second[i]) return -1;
i++;
}
return 0;
}

int main(){
int n;
cin >> n;
char s1[50],s2[50];
if (n == 2){
cin >> s1;
cin >> s2;
cout << string_compare(s1,s2); 
}
if(n > 2){

}
}

Grading criterion: string_compare is implemented properly
Rating A: Fully corrrect
Rating B: Almost Correct
Rating C: Tried something in somewhat right direction
Rating D: Code not there or totally wrong
Assigned grade: A
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
using namespace std;


int main(){
	int n;
	cin>>n;
	
	char arr[n][11];
//Taking input	
	for (int i=0;i<n;i++){
		for (int j=0; j<11;j++){
			cin>>arr[i][j];
			if (arr[i][j]==' '){
				break;
			}
		}
	}

//Swapping


	for (int b=0;b<n-1;b++){
		for (int c=0;c<n-1;c++){
			if (arr[c][1]<arr[c+1][1]){
				swap(&arr[c][11], &arr[c+1][11]);
			}
		}
	}
	
//Giving output

	for (int x=0;x<n;x++){
		for (int y=0;y<11;y++){
			cout<<arr[x][y];
			if (arr[x][y]==' '){
				break;
			}
		}
	}
	
}

Grading criterion: string_compare is implemented properly
Rating A: Fully corrrect
Rating B: Almost Correct
Rating C: Tried something in somewhat right direction
Rating D: Code not there or totally wrong
Assigned grade: D
Problem: Write a C++ program to collect a positive integer n from the user, and then collect n character strings from the user (containing only lower case alphabets and no other characters, not even spaces). The strings need not be of equal length but the maximum length of any string should be 11. The strings should be stored in an appropriate 2D array. Your program should then include the following:

1. A function string_compare which takes two strings as input and returns 1 if the first string appears before the second string in augmented alphabetical order, -1 if the second string appears before the first in augmented alphabetical order, and 0 if the two strings are equal to each other. 

2. A function string_sort which sorts the character strings in reverse alphabetical order using the bubble-sort algorithm.Your program should also print the number of string_compare operations (i.e., how many times the string_compare routine was called) and the number of string swaps performed.

Constraints
n is a positive integer, n < 15

The maximum length of any of the strings should be 11, excluding the NULL character

The character strings should contain only lower case alphabets

Student submission:
#include<iostream>
#define Max 11
using namespace std;
int string_compare (char *first, char * second){
int i = 0;
while (true){
if (first[i] == 0 && second[i] == 0) return 0;
if (first[i] == 0) return 1;
if (second[i] == 0) return -1;
if (first[i] < second[i]) return 1;
if (first[i] > second[i]) return -1;
i++;
}
return 0;
}
void string_sort(char **A,int n1,int &no_of_calls,int &no_of_swaps)
{
int i,j;
no_of_calls = 0;
no_of_swaps = 0;
for(i=0;i<n1-1;i++)
{
for(j=0;j<n1-i-1;j++)
{
no_of_calls++;
if(string_compare(A[j],A[j+1]) == 1)
{
char *temp = A[j];
A[j] = A[j+1];
A[j+1] = temp;
no_of_swaps++;
}
}
}
}
int main()
{
int i,n,count1=0,count2=0;
cin >> n;
char **A = new char*[n];
for(i=0;i<n;i++)
A[i] = new char[Max];
for(i=0;i<n;i++)
cin>>A[i];
string_sort(A,n,count1,count2);
for(i=0;i<n;i++)
cout << A[i] << " ";
cout <<endl << count1 << " " << count2;
}

Grading criterion: string_compare is implemented properly
Rating A: Fully corrrect
Rating B: Almost Correct
Rating C: Tried something in somewhat right direction
Rating D: Code not there or totally wrong
Assigned grade: A