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   ljh7009
   c¾ð¾î »ðÀÔ Á¤·Ä Áß °£Á¢Á¤·Ä Áú¹®µå·Á¿ä

http://www.hackerschool.org/HS_Boards/zboard.php?AllArticle=true&no=6518 [º¹»ç]


ÀüüÀûÀÎ ¼Ò½º´Â

#include <stdio.h>
#include <malloc.h>

void indirect_insert_sort(int a[], int index[], int n)
{
        int i, j;
        int t;

        for(i = 0; i < n; i++)
                index[i] = i;

        for(i = 1; i< n; i++)
        {
                t = index[i];
                j = i;

                while(a[index[j-1]] > a[t] && j > 0)        
                {                                    
                        index[j] = index[j-1];
                        j--;
                }

                index[j] = t;
        }
}

void rearrange(int a[], int index[], int n)
{
        int *p;
        int i;
        p = (int*)malloc(sizeof(int) * n);

        for(i = 0; i < n; i++)
                p[i] = a[index[i]];

        for(i = 0; i < n; i++)
                a[i] = p[i];

        free(p);
}

void print_arr(int a[], int n)
{
        int i;

        for(i = 0; i < n; i++)
                printf("%-5d", a[i]);

        printf("\n");
}

void print_index_arr(int a[], int index[], int n)
{
        int i;

        for(i = 0; i < n; i++)
                printf("%-5d", a[index[i]]);

        printf("\n");
}

int main()
{
        int arr[] = {9, 8, 7, 6, 5, 4, 3, 2, 1};
        int len = sizeof(arr) / sizeof(int);
        int index[sizeof(arr) / sizeof(int)] = {0, };

        printf("ÃʱⰪ\n");
        print_arr(arr, len);
        
        indirect_insert_sort(arr, index, len);

        printf("\n°£Á¢ Á¤·Ä ÈÄ arr °ª\n");
        print_arr(arr, len);

        printf("\n°£Á¢ Á¤·Ä ÈÄ arr[index] °ª\n");
        print_index_arr(arr, index, len);

        rearrange(arr, index, len);

        printf("\n°£Á¢ Á¤·Ä, Àç¹è¿­ ÈÄ arr°ª\n");
        print_arr(arr, len);

        return 0;
}

À̰ÍÀÔ´Ï´Ù.

ÀÌ Áß¿¡ ÄÄÆÄÀÏ ½Ã indirect_insert_sort ÇÔ¼öÀÇ

while(a[index[j-1]] > a[t] && j > 0) ºÎºÐÀÌ ¿¡·¯°¡ ³³´Ï´Ù.

±Ùµ¥ Á¶°Ç ¼ø¼­¸¦ while(j > 0 && a[index[j-1]] > a[t]) ·Î ¹Ù²Ù¸é

¿¡·¯°¡ ³ªÁö ¾Ê½À´Ï´Ù... ÀÌÀ¯¸¦ ¾Ë·ÁÁÖ½Ç ¼ö ÀÖ³ª¿ä??

  Hit : 5180     Date : 2015/03/19 06:22



    
Prox while(j > 0 && a[index[j-1]] > a[t]) ÀÌ°Ô ¸Â´Â ÄÚµùÀÔ´Ï´Ù.

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while(a[index[j-1]] > a[t] && j > 0) °°Àº°æ¿ì¿¡´Â...
j=0À϶§ ¸ÕÀú index[j-1]=index[-1]ÀÇ °ªÀ» Àоî¿À°ÚÁÒ? ¾Æ¸¶ -123456°°Àº dummy°ªÀÌ ÀÐÈ÷°ÚÁÒ
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2015/03/20