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Link: http://codepad.org/7uH0IohH    [ raw code | output | fork ]

C, pasted on Dec 11:
#include <stdio.h>
#include <stdlib.h>

int gen(int d)
{
    int i;
    int v = 0;
    int f = 0;
    
    for (i = 0; i < d; i++) {
	int r = rand() % 10;
	if (f & (1 << r)) {
	    i--;
	    continue;
	}
	f |= 1 << r;
	v = v * 10 + r;
    }
    
    return v;
}

int main()
{
    int i;
    
    for (i = 0; i < 10; i++) {
	printf("%d\n", gen(3));
    }
    
    return 0;
}


Output:
1
2
3
4
5
6
7
8
9
10
367
536
291
270
936
62
618
792
23
759


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