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