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- #include <iostream>
- #include <cstdlib>
- #include <ctime>
- using namespace std;
- void wypisz (int * tab,int n)
- {
- for (int i=0;i<n;i++)
- cout << tab[i] << " ";
- cout << endl;
- }
- void c_sort(int pom[][2],int n,int pos)
- {
- int tmp[n][2];
- int val[n]={};
- for (int i=0;i<n;i++) val[pom[i][pos]]++;
- for (int i=1;i<n;i++) val[i]+=val[i-1];
- for (int i=n-1;i>=0;i--)
- {
- int j=--val[pom[i][pos]];
- tmp[j][0]=pom[i][0];
- tmp[j][1]=pom[i][1];
- }
- for (int i=0;i<n;i++)
- {
- pom[i][0]=tmp[i][0];
- pom[i][1]=tmp[i][1];
- }
- }
- void Radix(int * tab,int n)
- {
- int pom[n][2];
- for (int i=0;i<n;i++)
- {
- pom[i][1]=tab[i]%n;
- pom[i][0]=tab[i]/n;
- }
- c_sort(pom,n,1);
- c_sort(pom,n,0);
- for (int i=0;i<n;i++)
- tab[i]=n*pom[i][0]+pom[i][1];
- }
- int main()
- {
- int n;
- cin >> n;
- int tab[n];
- srand(time(NULL));
- for (int i=0;i<n;i++)
- tab[i]=rand()%(n*n);
- wypisz(tab,n);
- Radix(tab,n);
- wypisz(tab,n);
- }
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