题解 | #有序序列判断#

#include <stdio.h>
int main()
{
    int x = 0;
    int y = 0;
    int n = 0;
    int arr[50] = {0};
    scanf("%d", &n);

    size_t i = 0;
    for(i=0; i<n; i++)
    {
        scanf("%d", &arr[i]);
        if(i>0)
        {
            if(arr[i] > arr[i-1])
            {
                x =1;
            }
            else if(arr[i] < arr[i-1])
            {
                y = 1;
            }
        }
        if(x+y == 2)
            break;
    }
    if(x+y < 2)
        printf("sorted\n");
    else
     printf("unsorted\n");
    return 0;
}