C语言代码：统计点赞记录分析用户特性

#include <stdio.h> #include <stdlib.h> #include <string.h>

#define MAXN 1005 #define MAXK 15

int n, cnt[MAXN]; int *p[MAXN][MAXK];

int cmp(const void *a, const void *b) { return *(int *)a - *(int *)b; }

int main() { scanf("%d", &n); for (int i = 0; i < n; ++i) { int k; scanf("%d", &k); for (int j = 0; j < k; ++j) { p[i][j] = (int *)malloc(sizeof(int)); scanf("%d", p[i][j]); } qsort(p[i], k, sizeof(int *), cmp); }

int max = -1, maxIndex = -1;
for (int i = 0; i < n; ++i)
    for (int j = 0; j < MAXK; ++j)
        if (p[i][j] != NULL)
        {
            int k = *p[i][j];
            ++cnt[k];
            if (cnt[k] > max || (cnt[k] == max && k > maxIndex))
            {
                max = cnt[k];
                maxIndex = k;
            }
            free(p[i][j]);
        }

printf("%d %d\n", maxIndex, max);

return 0;

}