func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 0x3f3f3f3f3f3f3f3f;   const long long MAXN = 1e5 + 7;   const long long MAXM = 1e5 + 7;   const long long MOD = 1e9 + 7;   const double eps = 1e-6;   const double pi = acos(-1.0);   long long a[200005];   int main() {     int n;     cin >> n;     for (int i = 1; i <= n; i++) scanf( %lld , &a[i]);     sort(a + 1, a + 1 + n);     long long ans = 0x3f3f3f3f;     for (int i = 1; i <= n / 2; i++) ans = min(ans, a[i + n / 2] - a[i]);     cout << ans << endl;     return 0;   }   