#include <bits/stdc++.h>
using namespace std;
template <typename Arg1>
void __f(const char* name, Arg1&& arg1) {
  std::cerr << name << " : " << arg1 << '\n';
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args) {
  const char* comma = strchr(names + 1, ',');
  std::cerr.write(names, comma - names) << " : " << arg1 << " | ";
  __f(comma + 1, args...);
}
const long long int N = 1e5 + 5;
void Hariiih() {
  long long int n;
  cin >> n;
  long long int a[n];
  long long int sum = 0;
  for (long long int i = 0; i < n; ++i) {
    cin >> a[i];
    sum += a[i];
  }
  if (sum == 0) {
    cout << "NO\n";
    return;
  }
  cout << "YES\n";
  sort(a, a + n);
  if (sum > 0) {
    for (long long int i = 0; i < n; ++i) {
      cout << a[n - 1 - i] << " ";
    }
  } else {
    for (long long int i = 0; i < n; ++i) {
      cout << a[i] << " ";
    }
  }
  cout << '\n';
  return;
}
signed main() {
  std::ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long int t = 1;
  cin >> t;
  while (t--) Hariiih();
  return 0;
}
