1 | import { flatten } from '../../utils/array.js';
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2 | import { factory } from '../../utils/factory.js';
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3 | var name = 'setUnion';
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4 | var dependencies = ['typed', 'size', 'concat', 'subset', 'setIntersect', 'setSymDifference', 'Index'];
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5 | export var createSetUnion = /* #__PURE__ */factory(name, dependencies, (_ref) => {
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6 | var {
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7 | typed,
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8 | size,
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9 | concat,
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10 | subset,
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11 | setIntersect,
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12 | setSymDifference,
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13 | Index
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14 | } = _ref;
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15 |
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16 | /**
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17 | * Create the union of two (multi)sets.
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18 | * Multi-dimension arrays will be converted to single-dimension arrays before the operation.
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19 | *
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20 | * Syntax:
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21 | *
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22 | * math.setUnion(set1, set2)
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23 | *
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24 | * Examples:
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25 | *
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26 | * math.setUnion([1, 2, 3, 4], [3, 4, 5, 6]) // returns [1, 2, 3, 4, 5, 6]
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27 | * math.setUnion([[1, 2], [3, 4]], [[3, 4], [5, 6]]) // returns [1, 2, 3, 4, 5, 6]
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28 | *
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29 | * See also:
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30 | *
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31 | * setIntersect, setDifference
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32 | *
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33 | * @param {Array | Matrix} a1 A (multi)set
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34 | * @param {Array | Matrix} a2 A (multi)set
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35 | * @return {Array | Matrix} The union of two (multi)sets
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36 | */
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37 | return typed(name, {
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38 | 'Array | Matrix, Array | Matrix': function ArrayMatrixArrayMatrix(a1, a2) {
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39 | if (subset(size(a1), new Index(0)) === 0) {
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40 | // if any of them is empty, return the other one
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41 | return flatten(a2);
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42 | } else if (subset(size(a2), new Index(0)) === 0) {
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43 | return flatten(a1);
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44 | }
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45 |
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46 | var b1 = flatten(a1);
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47 | var b2 = flatten(a2);
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48 | return concat(setSymDifference(b1, b2), setIntersect(b1, b2));
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49 | }
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50 | });
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51 | }); |
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