text: "use strict";
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.createSetDifference = void 0;
  
  var _array = require("../../utils/array.js");
  
  var _factory = require("../../utils/factory.js");
  
  var name = 'setDifference';
  var dependencies = ['typed', 'size', 'subset', 'compareNatural', 'Index', 'DenseMatrix'];
  var createSetDifference = /* #__PURE__ */(0, _factory.factory)(name, dependencies, function (_ref) {
    var typed = _ref.typed,
        size = _ref.size,
        subset = _ref.subset,
        compareNatural = _ref.compareNatural,
        Index = _ref.Index,
        DenseMatrix = _ref.DenseMatrix;
  
    /**
     * Create the difference of two (multi)sets: every element of set1, that is not the element of set2.
     * Multi-dimension arrays will be converted to single-dimension arrays before the operation.
     *
     * Syntax:
     *
     *    math.setDifference(set1, set2)
     *
     * Examples:
     *
     *    math.setDifference([1, 2, 3, 4], [3, 4, 5, 6])            // returns [1, 2]
     *    math.setDifference([[1, 2], [3, 4]], [[3, 4], [5, 6]])    // returns [1, 2]
     *
     * See also:
     *
     *    setUnion, setIntersect, setSymDifference
     *
     * @param {Array | Matrix}    a1  A (multi)set
     * @param {Array | Matrix}    a2  A (multi)set
     * @return {Array | Matrix}    The difference of two (multi)sets
     */
    return typed(name, {
      'Array | Matrix, Array | Matrix': function ArrayMatrixArrayMatrix(a1, a2) {
        var result;
  
        if (subset(size(a1), new Index(0)) === 0) {
          // empty-anything=empty
          result = [];
        } else if (subset(size(a2), new Index(0)) === 0) {
          // anything-empty=anything
          return (0, _array.flatten)(a1.toArray());
        } else {
          var b1 = (0, _array.identify)((0, _array.flatten)(Array.isArray(a1) ? a1 : a1.toArray()).sort(compareNatural));
          var b2 = (0, _array.identify)((0, _array.flatten)(Array.isArray(a2) ? a2 : a2.toArray()).sort(compareNatural));
          result = [];
          var inb2;
  
          for (var i = 0; i < b1.length; i++) {
            inb2 = false;
  
            for (var j = 0; j < b2.length; j++) {
              if (compareNatural(b1[i].value, b2[j].value) === 0 && b1[i].identifier === b2[j].identifier) {
                // the identifier is always a decimal int
                inb2 = true;
                break;
              }
            }
  
            if (!inb2) {
              result.push(b1[i]);
            }
          }
        } // return an array, if both inputs were arrays
  
  
        if (Array.isArray(a1) && Array.isArray(a2)) {
          return (0, _array.generalize)(result);
        } // return a matrix otherwise
  
  
        return new DenseMatrix((0, _array.generalize)(result));
      }
    });
  });
  exports.createSetDifference = createSetDifference;