func_code_string: #include <bits/stdc++.h>   using namespace std;   long long i, n, m, a[200000], q, l, p, k, c[200000], b[200000], j, ans;   string s[200000], ss, s1;   int main() {     ios_base::sync_with_stdio(0);     ans = 1000000007;     cin >> n;     for (i = 1; i <= n; i++) cin >> a[i];     sort(a + 1, a + 1 + n);     for (i = 1; i <= n / 2; i++) {       ans = min(ans, a[n / 2 + i] - a[i]);     }     cout << ans;     return 0;   }   