SDUT - 3332 数据结构实验之栈与队列五：下一较大值（一）

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct node
{
    int data, next;
}s[100005], *a[100005];
int p = 0;
int main()
{
    int t, n, i;
    scanf("%d", &t);
    while(t--)
    {
        p = 0;
        scanf("%d", &n);
        for(i = 1; i <= n; i++)
        {
            scanf("%d", &s[i].data);
            s[i].next = -1;
            if(p == 0)a[p++] = &s[i];
            else
            {
                while(p > 0 && a[p - 1] -> data < s[i].data)
                {
                    a[p - 1] -> next = s[i].data;
                    p--;
                }
                a[p++] = &s[i];
            }
        }
        for(i = 1; i <= n; i++)printf("%d-->%d\n", s[i].data, s[i].next);
        printf("\n");
    }
    return 0;
}