652B - z-sort - CodeForces Solution


sortings *1000

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Python Code:

import sys
from sys import stdin,stdout
from math import *
import math, random, operator
from itertools import product, permutations, combinations
from collections import deque, defaultdict, Counter
input=sys.stdin.readline
def hi():
        n=int(input())
    l=list(map(int,input().split()))
    l.sort()
        res=[]
    p=0
    q=n-1
        for i in range(n):
        if i&1:
                        res.append(l[q])
            q-=1
        else:
                        res.append(l[p])
            p+=1
    print(*res,sep=' ')

if __name__=="__main__":hi()
    

C++ Code:

// Author: Kas-S
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;


int main() {
    ios::sync_with_stdio(0); cin.tie(0);
	int n;
    cin >> n;
    vector<int> a(n);
    for (int &v: a) cin >> v;
    sort(a.begin(), a.end());
    for (int i = 2; i < n; i += 2) {
        swap(a[i], a[i-1]);
    }
    for (int &v: a) cout << v << ' ';
    return 0;
}


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