AlgoExpert Minimum Waiting Time

import java.util.*;

class Program {

  public int minimumWaitingTime(int[] queries) {
    Arrays.sort(queries);
    int totalSum = 0;
    int sum = 0;
    for (int i = 1; i < queries.length; i++){
      sum += queries[i - 1];
      totalSum += sum;
    }
    return totalSum;
  }
}