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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. #include <iostream>
  5. using namespace std;
  6.  
  7. void merge2(int a1[], int low, int mid, int high){
  8.     int gap = (high-low+2)/2;
  9.  
  10.     while(gap>=1){
  11.         int i=0,j=i+gap;
  12.  
  13.         while(j<=high){
  14.  
  15.             if(a1[i]>a1[j]) swap(a1[i],a1[j]);
  16.             i++;j++;
  17.         }
  18.  
  19.         int temp = gap;
  20.         gap = (gap+2-1)/2;
  21.         if(temp==gap==1) break;
  22.     }
  23. }
  24.  
  25. void mergeSort(int a[], int low, int high){
  26.     if(low>=high) return;
  27.     int mid = low+(high-low)/2;
  28.     mergeSort(a,low,mid);
  29.     mergeSort(a,mid+1,high);
  30.     merge2(a,low,mid,high);
  31.  
  32. }
  33.  
  34. int main(){
  35.  
  36.  
  37.     int n;  cin>>n;
  38.     int arr[n];
  39.     for (int i = 0; i < n; i++)
  40.     {
  41.         cin>>arr[i];
  42.     }
  43.     mergeSort(arr,0,n-1);
  44.     for (int i = 0; i < n; i++)
  45.     {
  46.         cout<<arr[i]<<'\n';
  47.     }
  48.  
  49.     return 0;
  50. }
Success #stdin #stdout 0.01s 5496KB
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https://ideone.com/5evfkS
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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