Pagini recente » Cod sursa (job #631419) | Cod sursa (job #2064276) | Cod sursa (job #1318765) | Cod sursa (job #1595962) | Cod sursa (job #1538178)
#include <iostream>
#include <fstream>
#include <vector>
#include <limits.h>
#include <cstring>
using namespace std;
#define numBytes sizeof(int)
#define mask 0xFF //this is equivalent with 0000 0000 0000 1111 number
#define get_byte(n) ((n>>(8*byte))&mask)
int n,a,b,c;
void generateVector(vector<int>& vec){
vec[0]=b;
for (int i = 1;i<=n-1;++i){
vec[i] = (a*vec[i-1]+b)%c;
}
}
//#define countOccurences( count)
//for (int i = 0; i<=n-1;++i)
//++count[vec[i]]
void countOccurences(vector<int> count, vector<int> vec){
for (int i = 0;i <= n-1; ++i)
++count[vec[i]];
}
void countingSort(vector<int>& arr, int n, int byte){
int count[1<<8]; //because inside a byte we can store a maximum value of 255
int output[n];
memset(count, 0, sizeof(count));
memset(output, 0, sizeof(output));
for (int i = 0; i < n; ++i){
count[get_byte(arr[i])]++;
}
for (int i = 1; i<=255; ++i){
count[i] += count[i-1];
//cout<<count[i]<<endl;
}
/*for (int i = 0; i <= n-1; i++){
//arr[i] = output[i];
cout<<arr[i]<<" ";
}
cout<<endl<<endl;*/
for (int i = 0; i<=n-1; ++i){
//cout<<count[get_byte(arr[i])]<<endl;
if (count[get_byte(arr[i])]){
output[count[get_byte(arr[i])]-1]= arr[i];
// cout<<count[get_byte(arr[i])]<<" "<<arr[i]<<" ";
count[get_byte(arr[i])]--;
}
}
for (int i = 0; i <= n-1; i++){
arr[i] = output[i];
//cout<<arr[i]<<" ";
}
//cout<<endl<<endl;
}
void radixsort(vector<int>& vec, int n){
for (int i = 0; i <= numBytes - 1; ++i){
countingSort(vec, n, i);
//for (int i = 0;i<=n-1;++i)
// cout<<vec[i]<<" ";
//cout<<endl<<endl;
}
}
void print (vector<int>& vec, int n, ofstream& radixOut){
if (vec[0]<=vec[n-1]){
for (int i = 0; i<=n-1;i+=10)
radixOut<<vec[i]<<" ";
}
else
{
for (int i = n-1; i>=0; i-=10)
radixOut<<vec[i]<<" ";
}
}
int main(){
ifstream radixIn;
ofstream radixOut;
//int n, a, b, c;
radixIn.open("radixsort.in");
radixOut.open("radixsort.out");
radixIn>>n;
radixIn>>a;
radixIn>>b>>c;
//cout<<n<<" "<<a<<" "<<b<<" "<<c;
vector<int> vec(n);
generateVector(vec);
//for (int i = 0; i<=n-1;++i)
// cout<<vec[i]<<" ";
//cout<<endl<<endl;
radixsort(vec, n);
//for (int i = 0 ;i<=n-1;i++)
// cout<<vec[i]<<" ";
print(vec,n,radixOut);
return 0;
}