TD1_DEV51_Qualite_Algo/student_rank.c
2024-09-03 12:18:55 +02:00

126 lines
3.1 KiB
C

// Student rank
// M.Menault 2024
#include <stdio.h>
#include <stdlib.h>
#include "heapsort.h"
#include "bubblesort.h"
void generate_grades(int** students_array, int students_number, int grades_number)
{
int i = 0;
for(i=0;i<students_number;i++)
{
students_array[i] = (int*) malloc(grades_number*sizeof(int));
generate_array(students_array[i],grades_number);
}
}
void generate_ranks(int** students_array, int students_number, int grades_number)
{
int i = 0;
int j = 0;
for(i=0;i<students_number;i++)
{
students_array[i] = (int*) malloc(grades_number*sizeof(int));
for(j=0;j<grades_number;j++)
{
students_array[i][j] = -1;
}
}
}
void free_array(int** students_array, int students_number)
{
int i = 0;
for(i=0;i<students_number;i++)
{
free(students_array[i]);
}
}
void print_student_array(int** students_array, int students_number, int grades_number)
{
int i = 0;
printf("----------------------\n");
for(i=0;i<students_number;i++)
{
printf("Student %d : ",i);
print_array(students_array[i],grades_number);
}
printf("----------------------\n");
}
int find_rank_student(int student_grade, int* grades_array, int students_number)
{
int position = -1;
int i = 0;
//bubblesort(grades_array,students_number);
for(i = students_number-1; i >= 0; i--)
{
if(grades_array[i] == student_grade)
{
position = students_number-i;
break;
}
}
return position;
}
void sort_students(int** students_rank, int** students_array, int students_number, int grades_number)
{
int i = 0, j = 0;
for(i = 0; i < grades_number; i++)
{
int * grades = (int*) malloc(students_number*sizeof(int));
for(j = 0; j < students_number; j++)
{
grades[j] = students_array[j][i];
}
bubblesort(grades,students_number);
for(j = 0; j < students_number; j++)
{
students_rank[j][i] = find_rank_student(students_array[j][i],grades,students_number);
}
free(grades);
}
}
int main(int argc, char** argv)
{
int** student_grades = NULL;
int** student_ranks = NULL;
int students_length = 0;
int grades_length = 0;
int debug_mode = 0;
if(argc != 4)
{
printf("Usage : %s <number of student> <number of grade per student> <debug mode : 0|1>\n",argv[0]);
return -1;
}
students_length = atoi(argv[1]);
grades_length = atoi(argv[2]);
debug_mode = atoi(argv[3]);
student_grades = (int**) malloc(students_length*sizeof(int*));
student_ranks = (int**) malloc(students_length*sizeof(int*));
generate_grades(student_grades,students_length,grades_length);
generate_ranks(student_ranks,students_length,grades_length);
sort_students(student_ranks,student_grades,students_length,grades_length);
if(debug_mode)
{
print_student_array(student_grades,students_length,grades_length);
print_student_array(student_ranks,students_length,grades_length);
}
free_array(student_grades,students_length);
free_array(student_ranks,students_length);
free(student_grades);
free(student_ranks);
return 0;
}