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11497.cpp
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65 lines (51 loc) · 1.08 KB
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//
// 11497.cpp
// algo
//
// Created by 박효정 on 2021/05/27.
//
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <cmath>
using namespace std;
int main(){
cin.tie(0);
cout.tie(0);
std::ios::sync_with_stdio(false);
int cnt;
cin>>cnt;
while(cnt--){
int n;
int a;
int index;
int res=-2147000000;
cin>>n;
vector<int>v(n);
priority_queue<int>pq;
for(int i=0;i<n;i++){
cin>>a;
pq.push(a);
}
index=(n/2);
v[index]=pq.top();
pq.pop();
for(int i=1;i<=n/2;i++){
if(index-i>=0){
v[index-i]=pq.top();
pq.pop();
}
if(index+i<n){
v[index+i]=pq.top();
pq.pop();
}
}
res=max(abs(v[0]-v[n-1]),res);
for(int i=0;i<n-1;i++){
res=max(abs(v[i]-v[i+1]),res);
}
cout<<res<<"\n";
}
return 0;
}