Sort Function doesn't work in Discovery class need to be fixed

[kartikaytyagi]

  Collections.sort(groky, new Comparator<Grok>() {
      public int compare(Grok g1, Grok g2) {
        return (this.complexity(g1.getNamedRegex()) < this.complexity(g2.getNamedRegex())) ? 1 : 0;
      }

needs to be changed to

 groky.sort(
        new Comparator<Grok>() {
          public int compare(Grok g1, Grok g2) {
            return Integer.compare(
                this.complexity(g2.getNamedRegex()), this.complexity(g1.getNamedRegex()));
          }