func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 1000100;   const int INF = (1 << 29);   const double EPS = 0.000000001;   const double Pi = acos(-1.0);   int n;   long long x[maxn];   int main() {     while (cin >> n) {       for (int i = 1; i <= n; i++) scanf( %I64d , &x[i]);       sort(x + 1, x + n + 1);       long long ans = 1e12;       for (int i = 1; i + n / 2 <= n; i++) {         long long a = x[i], b = x[i + n / 2];         ans = min(ans, b - a);       }       cout << ans << endl;     }     return 0;   }   