61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.createSetSize = void 0;
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var _array = require("../../utils/array.js");
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var _factory = require("../../utils/factory.js");
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var name = 'setSize';
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var dependencies = ['typed', 'compareNatural'];
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var createSetSize = /* #__PURE__ */(0, _factory.factory)(name, dependencies, function (_ref) {
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var typed = _ref.typed,
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compareNatural = _ref.compareNatural;
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/**
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* Count the number of elements of a (multi)set. When a second parameter is 'true', count only the unique values.
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* A multi-dimension array will be converted to a single-dimension array before the operation.
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*
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* Syntax:
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*
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* math.setSize(set)
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* math.setSize(set, unique)
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*
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* Examples:
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*
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* math.setSize([1, 2, 2, 4]) // returns 4
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* math.setSize([1, 2, 2, 4], true) // returns 3
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*
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* See also:
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*
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* setUnion, setIntersect, setDifference
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*
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* @param {Array | Matrix} a A multiset
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* @return {number} The number of elements of the (multi)set
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*/
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return typed(name, {
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'Array | Matrix': function ArrayMatrix(a) {
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return Array.isArray(a) ? (0, _array.flatten)(a).length : (0, _array.flatten)(a.toArray()).length;
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},
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'Array | Matrix, boolean': function ArrayMatrixBoolean(a, unique) {
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if (unique === false || a.length === 0) {
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return Array.isArray(a) ? (0, _array.flatten)(a).length : (0, _array.flatten)(a.toArray()).length;
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} else {
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var b = (0, _array.flatten)(Array.isArray(a) ? a : a.toArray()).sort(compareNatural);
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var count = 1;
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for (var i = 1; i < b.length; i++) {
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if (compareNatural(b[i], b[i - 1]) !== 0) {
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count++;
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}
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}
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return count;
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}
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}
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});
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});
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exports.createSetSize = createSetSize;
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