Cod sursa(job #3357654)

Utilizator NutaAlexandruASN49K NutaAlexandru Data 12 iunie 2026 15:34:39
Problema Radix Sort Scor 100
Compilator c-64 Status done
Runda Arhiva educationala Marime 1.42 kb
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#define NR_CNT_SORTS 4
#define RADIX_BYTES 1
#define RADIX_BITS (RADIX_BYTES << 3)
#define RADIX_MASK (1 << RADIX_BITS) - 1


int get_val_block(int x, int nr_block)
{
    return (x >> (nr_block * RADIX_BITS)) & RADIX_MASK;
}

void count_sort(int *v, int *next_v, int n, int nr_block)
{
    int *cnt = (int *) calloc(RADIX_MASK + 1, sizeof(int));
    int *psum = (int *) calloc(RADIX_MASK + 1, sizeof(int));
    for (int i = 0; i < n; i++) {
        cnt[get_val_block(v[i], nr_block)]++;
    }

    for (int i = 1; i <= RADIX_MASK; i++) {
        psum[i] = psum[i - 1] + cnt[i - 1];
    }

    for (int i = 0; i < n; i++) {
        next_v[psum[get_val_block(v[i], nr_block)]++] = v[i];
    }
    free(cnt);
    free(psum);
}

void radix_sort(int *v, int n)
{
    int *tmp = (int *)malloc(n * sizeof(int));
    for (int i = 0; i < NR_CNT_SORTS; i++) {
        count_sort(v, tmp, n, i);
        memcpy(v, tmp, n * sizeof(int));
    }
    free(tmp);
}

int main()
{
    freopen("radixsort.in", "r", stdin);
    freopen("radixsort.out", "w", stdout);
    int n, a, b, c;
    scanf("%d%d%d%d", &n, &a, &b, &c);
    int *v = (int *) malloc(n * sizeof(int));
    v[0] = b;
    for (int i = 1; i < n; i++) {
        v[i] = (1LL * a * v[i - 1] + b) % c;
    }
    radix_sort(v, n);
    for (int i = 0; i < n; i += 10) {
        printf("%d ", v[i]);
    }
    printf("\n");
    free(v);
}