var isSorted = require('./isSorted');
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exports = function(arr) {
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var cmp =
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arguments.length > 1 && arguments[1] !== undefined
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? arguments[1]
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: isSorted.defComparator;
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if (arr.length <= 1) return arr;
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var middle = floor(arr.length / 2);
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var left = arr.slice(0, middle);
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var right = arr.slice(middle);
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return merge(exports(left, cmp), exports(right, cmp), cmp);
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};
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function merge(left, right, cmp) {
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var ret = [];
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var i = 0;
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var j = 0;
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while (i < left.length && j < right.length) {
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cmp(left[i], right[j]) < 0 ? ret.push(left[i++]) : ret.push(right[j++]);
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}
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while (i < left.length) ret.push(left[i++]);
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while (j < right.length) ret.push(right[j++]);
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return ret;
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}
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var floor = Math.floor;
|
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module.exports = exports;
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