code: ///////////////////////////////////////////////////////////////////////////
  //                   __                _      _   ________               //
  //                  / /   ____  ____ _(_)____/ | / / ____/               //
  //                 / /   / __ \/ __ `/ / ___/  |/ / / __                 //
  //                / /___/ /_/ / /_/ / / /__/ /|  / /_/ /                 //
  //               /_____/\____/\__, /_/\___/_/ |_/\____/                  //
  //                           /____/                                      //
  //                                                                       //
  //               The Next Generation Logic Library                       //
  //                                                                       //
  ///////////////////////////////////////////////////////////////////////////
  //                                                                       //
  //  Copyright 2015-20xx Christoph Zengler                                //
  //                                                                       //
  //  Licensed under the Apache License, Version 2.0 (the "License");      //
  //  you may not use this file except in compliance with the License.     //
  //  You may obtain a copy of the License at                              //
  //                                                                       //
  //  http://www.apache.org/licenses/LICENSE-2.0                           //
  //                                                                       //
  //  Unless required by applicable law or agreed to in writing, software  //
  //  distributed under the License is distributed on an "AS IS" BASIS,    //
  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or      //
  //  implied.  See the License for the specific language governing        //
  //  permissions and limitations under the License.                       //
  //                                                                       //
  ///////////////////////////////////////////////////////////////////////////
  
  package org.logicng.primecomputation;
  
  import org.logicng.formulas.Literal;
  
  import java.util.List;
  import java.util.Objects;
  import java.util.SortedSet;
  
  /**
   * Result of a prime computation.
   * <p>
   * Contains a list of prime implicants, a list of prime implicates
   * and the coverage type specifying which list is complete.
   * @version 2.0.0
   * @since 2.0.0
   */
  public final class PrimeResult {
      private final List<SortedSet<Literal>> primeImplicants;
      private final List<SortedSet<Literal>> primeImplicates;
      private final CoverageType coverageType;
  
      /**
       * Constructs a new prime result.
       * @param primeImplicants the list of prime implicants
       * @param primeImplicates the list of prime implicates
       * @param coverageType    the coverage type
       */
      public PrimeResult(final List<SortedSet<Literal>> primeImplicants, final List<SortedSet<Literal>> primeImplicates,
                         final CoverageType coverageType) {
          this.primeImplicants = primeImplicants;
          this.primeImplicates = primeImplicates;
          this.coverageType = coverageType;
      }
  
      /**
       * Returns the list of prime implicants.
       * @return the list of prime implicants
       */
      public List<SortedSet<Literal>> getPrimeImplicants() {
          return this.primeImplicants;
      }
  
      /**
       * Returns the list of prime implicates.
       * @return the list of prime implicates
       */
      public List<SortedSet<Literal>> getPrimeImplicates() {
          return this.primeImplicates;
      }
  
      /**
       * Returns the coverage type.
       * @return the coverage type
       */
      public CoverageType getCoverageType() {
          return this.coverageType;
      }
  
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final PrimeResult that = (PrimeResult) o;
          return Objects.equals(this.primeImplicants, that.primeImplicants) &&
                  Objects.equals(this.primeImplicates, that.primeImplicates) &&
                  this.coverageType == that.coverageType;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(this.primeImplicants, this.primeImplicates, this.coverageType);
      }
  
      @Override
      public String toString() {
          return "PrimeResult{" +
                  "primeImplicants=" + this.primeImplicants +
                  ", primeImplicates=" + this.primeImplicates +
                  ", coverageInfo=" + this.coverageType +
                  '}';
      }
  
      /**
       * The coverage type.
       */
      public enum CoverageType {
          /**
           * Indicates that the set of prime implicants is complete,
           * i.e. there are no other prime implicants for the formula.
           */
          IMPLICANTS_COMPLETE,
  
          /**
           * Indicates that the set of prime implicates is complete,
           * i.e. there are no other prime implicates for the formula.
           */
          IMPLICATES_COMPLETE
      }
  }
  