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gastonchenet
2025-09-10 16:25:05 +00:00
parent ca552281c9
commit e39b1fefbb
4 changed files with 118 additions and 87 deletions
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153
student_rank.c
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@@ -4,122 +4,101 @@
#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_grades(int **students_array, size_t students_number, size_t grades_number) {
for (size_t i = 0; i < students_number; i++) {
students_array[i] = 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++)
{
void generate_ranks(int **students_array, size_t students_number, size_t grades_number) {
for (size_t i = 0; i < students_number; i++) {
students_array[i] = calloc(grades_number, sizeof(int));
for (size_t 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++)
{
void free_array(int **students_array, size_t students_number) {
for (size_t 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;
void print_student_array(int **students_array, size_t students_number, size_t grades_number) {
printf("----------------------\n");
for(i=0;i<students_number;i++)
{
printf("Student %d : ",i);
print_array(students_array[i],grades_number);
for (size_t i = 0; i < students_number; i++) {
printf("Student %zu : ", 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;
}
int find_rank_student(int student_grade, int *grades_array, size_t students_number) {
for (size_t i = 0; i < students_number; i++) {
if (grades_array[i] == student_grade) {
return i + 1;
}
}
return position;
return -1;
}
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);
void sort_students(int **students_rank, int **students_array, size_t students_number, size_t grades_number) {
int *grades = malloc(students_number * sizeof(int));
int *sorted_grades = malloc(students_number * sizeof(int));
int *sums = calloc(students_number, sizeof(int));
for (size_t i = 0; i < grades_number; i++) {
for (size_t j = 0; j < students_number; j++) {
sums[j] += students_array[j][i];
grades[j] = sums[j] / (i + 1);
sorted_grades[j] = grades[j];
}
heapsort(sorted_grades, students_number);
for (size_t j = 0, k = students_number - 1; j < k; j++, k--) {
int temp = sorted_grades[j];
sorted_grades[j] = sorted_grades[k];
sorted_grades[k] = temp;
}
for (size_t j = 0; j < students_number; j++) {
students_rank[j][i] = find_rank_student(grades[j], sorted_grades, students_number);
}
}
free(grades);
free(sorted_grades);
free(sums);
}
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]);
int main(int argc, char **argv) {
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);
size_t students_length = atoi(argv[1]);
size_t grades_length = atoi(argv[2]);
int debug_mode = atoi(argv[3]);
int **student_grades = malloc(students_length * sizeof(int *));
int **student_ranks = 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_array(student_grades, students_length);
free_array(student_ranks, students_length);
free(student_grades);
free(student_ranks);
return 0;
}