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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void merge2(int a1[], int low, int mid, int high){
  5.     int gap = (high-low+2)/2;
  6.  
  7.     while(gap>=1){
  8.         int i=0,j=i+gap;
  9.  
  10.         while(j<=high){
  11.  
  12.             if(a1[i]>a1[j]) swap(a1[i],a1[j]);
  13.             i++;j++;
  14.         }
  15.  
  16.         int temp = gap;
  17.         gap = (gap+2-1)/2;
  18.         if(temp==gap==1) break;
  19.     }
  20. }
  21.  
  22. void mergeSort(int a[], int low, int high){
  23.     if(low>=high) return;
  24.     int mid = low+(high-low)/2;
  25.     mergeSort(a,low,mid);
  26.     mergeSort(a,mid+1,high);
  27.     merge2(a,low,mid,high);
  28.  
  29. }
  30.  
  31. int main(){
  32.  
  33.  
  34.     int n;  cin>>n;
  35.     int arr[n];
  36.     for (int i = 0; i < n; i++)
  37.     {
  38.         cin>>arr[i];
  39.     }
  40.     mergeSort(arr,0,n-1);
  41.     for (int i = 0; i < n; i++)
  42.     {
  43.         cout<<arr[i]<<'\n';
  44.     }
  45.  
  46.     return 0;
  47. }
Success #stdin #stdout 0.01s 5512KB
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https://ideone.com/S775mQ
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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