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Cod sursa(job #68209)
using namespace std;
#include <iostream.h>
#include <stdlib.h>
#include <cstdio>
#include <string.h>
#include <algorithm>
#define maxn 1<<20
void radix (int byte, int N, int *source, int *dest)
{
int i;
int count[256];
int index[256];
memset (count, 0, sizeof (count));
for ( i=0; i<N; i++ ) count[((source[i])>>(byte<<3))&0xff]++;
index[0]=0;
for ( i=1; i<256; i++ ) index[i]=index[i-1]+count[i-1];
for ( i=0; i<N; i++ ) dest[index[((source[i])>>(byte<<3))&0xff]++] = source[i];
}
void radixsort (int *source, int *temp, int N)
{
radix (0, N, source, temp);
radix (1, N, temp, source);
radix (2, N, source, temp);
radix (3, N, temp, source);
}
void make_random (int *data, int N)
{
for ( int i=0; i<N; i++ ) data[i]=rand()-1;
}
int data[maxn];
int temp[maxn];
int main ()
{
srand(time(0));
make_random(data, 1000000);
radixsort (data, temp, 1000000);
// sort(data, data+1000000);
// for ( int i=0; i<100; i++ ) cout << data[i] << '\n';
printf("%d\n", 0xff);
int ok=1;
for(int i=1;i<1000000;++i) if(data[i]<data[i-1]) { ok=0; break;}
printf("%d\n", ok);
return 0;
}