预读在数组predict后来用C成果 [英] Read ahead in an array to predict later outcomes in C

问题描述

基本上我想要问的是，反正是有数组中的领先阅读，让你可以为它创建一个案例。

Basically what I'm trying to ask is, is there anyway to read ahead in an array so that you could create a 'case' for it.

例如：您阵列只有整数，如：0 0 0 0 4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 3

For ex: you array has only integers such as: 0 0 0 0 4 0 1 0 0 0 0 0 0 0 0 0 0 0 0 3

和你想尝试做的是创造一个coutdown，直到下一个非零数字。基本上显示倒计时。有没有办法做到这一点？

and what you want to try to do is create a coutdown till the next non zero number. Basically display the countdown. Is there any way to do this?

推荐答案

这code：

#include <stdio.h>

int main(void)
{
    int array[] = { 0, 0, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, };

    int a_size  = sizeof(array) / sizeof(array[0]);

    int i = 0;
    while (i < a_size)
    {
        if (array[i] == 0)
        {
            int j;
            for (j = i; j < a_size; j++)
                if (array[j] != 0)
                    break;
            printf("%d\n", j - i);
            i = j;
        }
        else
            i++;
    }
    return 0;
}

产生这样的输出：

produces this output:

4
1
12

如果这就是你想要的东西，那是大概你所需要的。如果不是你想要的，你需要更清楚地解释它是什么，你想要的。

If that's what you want, that's roughly what you need. If it is not what you want, you need to explain more clearly what it is that you want.

修订code为修正后的预计产量：

Revised code for revised expected output:

#include <stdio.h>

int main(void)
{
    int array[] = { 0, 0, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, };

    int a_size  = sizeof(array) / sizeof(array[0]);

    int i = 0;
    while (i < a_size)
    {
        if (array[i] == 0)
        {
            int j;
            for (j = i; j < a_size; j++)
                if (array[j] != 0)
                    break;
            int k = j - i;
            while (k > 0)
                printf(" %d", k--);
            i = j;
        }
        else
        {
            printf(" '");
            i++;
        }
    }
    putchar('\n');
    return 0;
}

修订输出：

 4 3 2 1 ' 1 ' 12 11 10 9 8 7 6 5 4 3 2 1 '

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