func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int numTest;     cin >> numTest;     for (int num = 0; num < numTest; ++num) {       int n;       cin >> n;       int arr[n];       for (int i = 0; i < n; ++i) {         cin >> arr[i];       }       sort(arr, arr + n);       int temp = arr[0], temp2 = 0;       for (int i = 1; i < n; ++i) {         temp2 += arr[i - 1];         arr[i] -= temp;         temp += arr[i];         if (arr[0] < arr[i]) arr[0] = arr[i];       }       cout << arr[0] << endl;     }   }   