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marge.cpp
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53 lines (51 loc) · 876 Bytes
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#include <iostream>
#include <vector>
using namespace std;
vector<int>so(vector<int>a){
if(a.size()==1)
return a;
if(a.size()==2){
if(a[0]>a[1])
swap(a[0],a[1]);
return a;
}
vector<int>f,s,l;
//sorting
for(int i=0;i<a.size()/2;i++)
f.push_back(a[i]);
f=so(f);
for(int i=a.size()/2;i<a.size();i++)
s.push_back(a[i]);
s=so(s);
//marging
int pf=0,ps=0;
while(l.size()<a.size()){
if(f[pf]<s[ps]){
l.push_back(f[pf]);
pf++;
}
else{
l.push_back(s[ps]);
ps++;
}
if(pf==f.size() || ps==s.size())
break;
}
while(ps<s.size())
l.push_back(s[ps]),ps++;
while(pf<f.size())
l.push_back(f[pf]),pf++;
return l;
}
int main(){
vector<int>v;
int n;
cin>>n;
v.resize(n);
for(int i=0;i<n;i++)
cin>>v[i];
v=so(v);
for(int i=0;i<n;i++)
cout<<v[i]<<" ";
cout<<endl;
}